Lee Soon-hwa

A struggling restaurant owner, caring for his sick mom, finds a bag of cash in a sauna locker, while a customs officer gets into trouble when his girlfriend runs off with money he borrowed from a loan shark.

A working class family move into a new condo purchased after 11 years of hard work. They throw a housewarming party to show his co-workers when overnight a heavy downpour creates an extremely deep sinkhole that engulfs the entire building.

When his mother goes missing, Lee Ho-yeon sets out to search for her. In the course of that journey, he discovers his parents' pasts during the democracy protests of the 1980s when student activists rose up against the repressive Chun Doo-hwan regime. Reading a book written by his mother, Ho-yeon uncovers a story of hope, love and betrayal, and struggles to understand painful secrets that have been hidden away for thirty years.

The massive scandal comes to light through a father's unwavering search for the truth behind the sudden death of his family.