The Jewish Nate Cohen and the Irish-Catholic Patrick Kelly are business partners who are constantly fighting. When they find out that Nate's daughter Sadye and Patrick's son Pat Jr. are getting married in Paris, the two and their wives take an ocean liner to France to stop the marriage. When they get there, they find that the situation has radically changed, and not for the better.
Andrew Maxwell is so intent on creating a universal language that he completely neglects his wife, Laurette, and daughter, Ruth. Laurette decides she wants to return to the stage and is encouraged by Charles Prescott, a former suitor. When Maxwell discovers Laurette and Prescott together, he berates her, and she angrily moves out, taking Ruth along with her.
With an eye towards social climbing wealthy Dustan Renshaw breaks his engagement with Janet Preece to wed socialite Leslie Brown. Moving abroad after marriage Leslie welcomes her friends the Stonehays while Dustan is away, accompanied by their private secretary, Janet Preece. Janet's sudden illness compels her to remain, and the two women become fast friends. Leslie learns the story of Janet's betrayal by a man known to her only as "D. R. Devastated to learn the truth Leslie leaves Dustan but as time passes, they are reunited at Janet's deathbed.
A recently widowed and destitute young mother (Jane Novak) appeals to her wealthy and heartless father-in-law (Robert Edeson) for financial aid. Instead, he convinces her to hand over her new baby to his care so that the child will be brought up with "everything money can buy." Unbeknownst to the grandfather, we learn that there are twin sons and our heroine keeps one baby to raise herself. The narrative jumps ahead to the boy's twenty-first birthday and we see what's become of them. Not surprisingly, the wealthy son has grown up spoiled and greedy while the poor one works hard and loves his mother.
Jack Straw (Warwick) is an iceman who becomes a waiter to be closer to the girl (McComas) he is interested in. Later, to impress her, he impersonates an Archduke from Pomerania. A Count from Pomerania (Brower) who is the ambassador arrives and learns of the long-missing son of royalty. The girl's mother (Ashton) learns of the trick being played by Jack. Just when Jack is exposed as being a fraud, it turns out that he is the genuine article.
Gail Ellis, a secretary, accompanies Professor Silas Griswold and his wife to China on an expedition to acquire antique vases. Curiosity draws her to the Shanghai slums where, unknown to Gail, her driver is participating in a scheme to abduct her. Gail escapes, but in the process is accosted by drunken sailors. Luckily, Rupert O'Dare, a young Englishman, is nearby and rescues Gail. He escorts her back to the hotel where he discloses his identity as a British secret service agent and proceeds to arrest the Griswolds for smuggling opium in antique vases. Gail then reveals herself as a member of the United States Secret Service and the two agents fall in love.
Allan loves Betty, a mountain girl. Not sure that she loves the boy. Betty declines to marry him. Dan, a rough mountaineer, lives a secluded life, with only his dog as companion. The man sees Betty bathing in a mountain stream. He falls madly in love with her. Later, Dan woos her in his rough way.
Jean, a wealthy young Canadian back from a trip to Europe, meets and falls for Carmen, a pretty young Spanish girl. They marry and have a daughter, but soon afterward Jean discovers his wife is having an affair. She takes her daughter and leaves him, and Jean's luck gets even worse--he loses his business in a fire and his thieving father-in-law steals what little money he has left.
U.S. Secret Service agent Truxton Darnley attires himself as a sailor and boards a schooner owned by arms smuggler Gus Olsen, who is in the employ of German spy Von Linterman to smuggle arms to German raiders in the South Seas. Truxton learns Gus’s plan to blow up the National Munitions Plant in San Francisco, just before his identity is discovery and he is thrown overboard. Washed ashore on the island of Moana, Truxton meets native girl Lurline. Promising to return to her, Truxton boards a steamer bound for San Francisco to foil the plot and soon afterwards Lurline’s father sells her into marriage with Gus. Escaping to Truxton's steamer, Lurline sails to San Francisco where Gus abducts her forcing her to dance in his Barbary Coast saloon. Truxton raids the bar, kills Gus is killed and the lovers are reunited.
John Reeves, steel magnate, wagers with his son Chester that he can earn twenty dollars a week and live on it. He procures work in the office of William Hart's steel plant. Against her brother's wish, Hart's sister Muriel adopts a little boy. Hart evens up by adopting John Reeves as his father. Reeves foils James Pettison's plot to ruin Hart. Chester also makes good as a workman and wins the affection of Hart's sister. The father reveals his identity and takes Hart as a partner.
Mark Reid, a young prospector, discovers gold in the Sierra foothills. He meets an old man known as "The Good Samaritan," who counsels him and welcomes him into his home. While he is away registering his claim, another prospector, Mike O'Hara, comes along, and, seeing no one around, takes possession of the gold mine. When Reid returns, the two engage in a struggle. As Reid is about to be overcome, an Indian slips a dagger into his hand. Reid is about to stab O'Hara when The Good Samaritan appears and stops the fight. Reid and the O'Hara set aside their differences and decide to become partners.
The plot concerns a war hero who returns home determined to give up his old ways as a crook. Bud Doyle (Milton Sills) is still being hounded by the cops, and both his wife (Marcia Nanon) and a former associate, a dishonest politician, want to do him in.
Divorce lawyer Maurice (Matt Moore) does not pay much attention to his wife Alice (Florence Vidor). When he spends their anniversary with famous actress Marianne (Louise Fadenza) Alice decides to seek a divorce herself.
Dr. Stannard Wayne -- like all "good" men of the times -- is a God-fearing soul. He marries the former mistress of his friend, Dr. Arthur Richards, without knowing her past. Richards, an abortionist, resumes his affair with the woman and runs off with her. But before he leaves, he frames Wayne for one of the illegal operations he has done, and the innocent man is sent to prison for five years. When he gets out, Wayne has become angry and cynical.
Bonnie and Cliff meet cute when she gives him a lift after his car has broken down. Turns out she’s getting ready to open a beauty parlor and bleaches her hair platinum blonde to drum up business much to the chagrin of a local woman’s group. However, when Cliff’s wealthy mother invites Bonnie to be guest of honor at her yacht party things turn around both business and personally for the pair.
Young William Burroughs comes from wealth but not nobility, so despite his income he is not welcomed when he pursues Lady Elizabeth Galton, and indeed he is not only beaten by her cousin but thrown out by his own father for the disgrace he has caused. He travels to the United States where he becomes a champion prizefighter. Upon his return to England, he finds circumstances quite changed for Lady Galton and he sets out to change her circumstances further.
Joe (Tearle) and Bessie (Ayres), living in sin and just scraping by. Bessie thinks Joe has stolen their meagre savings, so she leaves him and becomes a manicurist eventually marrying a wealthy man who turns out to be stingy and cruel. Joe saves heiress Marion (Mills) from drowning, makes good as a civil engineer and eventually marries her. Joe and Bessie meet again by chance and Joe, in helping her to keep her secret, incurs Marion's jealousy. Bessie, extorted by a former acquaintance in desperation, decides to tell everything to her husband. However, to aid Joe she accuses Wallace (Miljan), with whom Marion is preparing to go away. Finally, Joe and Marion are reconciled, but Bessie learns that the world never forgives a woman who sins even when she has reformed.
Orphaned heiress Katherine Bradley, known as "Kit," is an orphan and heiress is attending a fashionable and select seminary for young women. A favorite of the dean, she is allowed to take her automobile for a spin every evening with the proviso that she takes a chaperone with her. Willful Kit manages to slip out alone one day and has a blowout by the roadside. Young and handsome Gerald Cameron is passing by and offers a hand. Kit and he are instantly attracted and after many complications they are finally happily united.
Big Steve and Little Lefty, a pair of hobos, are happily drifting through life until the First World War comes and enter it and find their lives forever changed.
When his aunt disapproves of his marriage to Mabel Deering and threatens to disinherit him, Percy elicits the aid of his buddy Billy Haskell, who is engaged to Eileen Stanley. It is arranged that Billy and Mabel be found together in compromising circumstances by Percy and his aunt, but matters are complicated by the arrival of Billy's uncle in the city, and Aunt Emma becomes very fond of him. All is subsequently explained and thoughts of "divorce" are smoothed away as Uncle Todd couples up with Aunt Emma, and Billy and Eileen, and Percy and Mabel, reinstitute their carefree engagements.