Aoyama Takashi, a depressed salesman, is convinced his monotonous life is not worth living when he is saved by cheerful Yamamoto. As Aoyama's life begins to turn around, Yamamoto's mysterious identity unravels, revealing the truth.

A Japanese young office employee tries to end his life due to overwhelming pressure in the office environment. While he almost commits suicide, a classmate appears and saves his life. The classmate brings a different life to him from the moment they meet.