According to the buttered-cat paradox, cats always land on their feet while buttered toast always lands buttered side down. But if we put a piece of buttered toast on the back of a cat with the buttered side up, and only one will land, which one will that be? Chen Tzu Chen was stood up by his boyfriend Lei-Wang on their third anniversary. While the wedding day of Lei and Hsu Nai Fang is getting closer, Tzu Chen and Lei’s relationship seems to be more tense. However, Tzu Chen can't take it anymore.

This is a story of two men and their friendship lasting the duration of a day. Zhiming, a security guard who works in an underground car park, and who has accomplished absolutely nothing in life and no friends to speak of, saves a young man named Yao from suicide by drowning in the sea. Yao, once determined to kill himself before this, felt deeply moved by the man before him who has risked himself.