Lee Kwang-soo

Mild-mannered Tae Jung is wrongfully imprisoned for a heinous crime. He soon discovers that a mysterious figure named Yo Han orchestrated his downfall. Fueled by vengeance, Tae Jung sets out to make Yo Han pay.

One day, a dead body is found at an apartment near the supermarket. Finding this murder odd, Dae-sung, his mother, and his girlfriend Ah-hee gather around to find the real murderer, starting by looking through the receipts of the market.

Follows a genius actuary and his team as they bond while tackling divorce complexities to develop a new divorce insurance policy.