Hubert is a detective with the French police force who's the kind of cop who doesn't let little details get in the way of catching crooks -- and isn't afraid to speak with his fists if talking doesn't do the job. When Hubert gets in a dust-up with an innocent bystander while trying to apprehend a group of bank robbers, he learns the passerby was the son of the Chief of Police -- and Hubert is put on suspension for two months. Just as Hubert wonders what to do for the next 60 days, he learns that an old flame has died; 19 years ago, he was sent to Tokyo on assignment, and fell in love with a woman named Miko. Even though Hubert hadn't seen Miko in years, he was the sole beneficiary named in her will, and Hubert goes to Tokyo to sort out her effects. Once in Japan, Hubert meets Miko's daughter Yumi, who doesn't think much of Hubert and appears to be unaware that he is her biological father. As Hubert tries to bond with Yumi, he examines the facts behind Miko's death and begins to suspect her death was no accident, and with the help of his buddy Momo, he tries to find out the truth about her death.