After Seon-yoo's father committed suicide leaving behind a large sum of debt for them, Mother and 12-year-old Seon-yoo move to a new place to have new start.
A niece who lost her parents and grew up in the hands of an uncle who runs a shopping mall faces a new truth after her uncle's sudden death.
Three con artists with different backgrounds, team up for a daring and adventurous scheme of revenge against the villains of this era.