The story is about three high school students: a young male student, his girlfriend and a third wheel who is a One Piece fanatic. Their names are similar to the Straw Hat Pirates and the group form a fan club dedicated to One Piece.
No Ki-jun, an employee at an insurance company, decides to develop a divorce insurance policy after personally experiencing three divorces that impacted his life and finances. Despite potential biases, he believes divorce is an unforeseen disaster and establishes a team for divorce insurance.