When a pharmaceutical company's illegal experiments inadvertently create a zombie, the strange Park family finds it and tries to profit from it.

Su-young, a police detective who went to prison for someone else, is surprised when a mysterious woman named Yoon-sun arrives to collect her on her day of release. As she discovers that the promised compensation for her time behind bars has vanished, Su-young embarks on a mission to reclaim what rightfully belongs to her.

It seems to be a harmonious and happy family gathering. Conversations that begin with lighthearted jokes gradually uncover long-standing conflicts. Despite everyone's efforts to resolve and improve their relationships, the discussions only grow increasingly complicated.