Zenzo Shinozaki (Kenichi Endo) made a fortune in his lifetime working as a company president. Due to his bad temper, he has been isolated from people. Saori Yamane (Rena Matsui) works as a hostess at a bar. In her past, she killed her mother to protect her younger sibling. Zenzo Shinozaki then proposes to pay Saori 100 million yen for 100 hours of her time. Their lonely trip begins.