Kang In-Kyu’s father was brutally murdered 13 years ago. To take revenge on those who are responsible for his father’s death, he becomes a doctor. Kang In-Kyu volunteers at a prison medical office where the murderer is imprisoned.

A washed-up bowling legend and his woman are drowning in debt. They decide to recruit an autistic genius to win money playing the game.

In-man is a timid but caring man who creates a suicide group for his first night with his girlfriend and suggests a 'bucket list'. Strong but weak woman Ji-eun is at risk of being sold to some islands because of debt thats started with her college fees so she decides to spend a whole lot of money before she dies. Hye-ri is a bright but pained girl who gave everything to a man she loved but got nothing in return. Cho-hee is a woman who's life isn't the same after sending away everyone she ever loved. The four people alike, fulfill their 'bucket list' before they die and find hope and happiness in the process.