Nanami is a senior in college and thick in the hunt for work. Her dream is to work in the flamboyant field of media, but she has yet to receive any offer. When her best friend, Tomoko, lands a position, she becomes frustrated and takes it out on her boyfriend, Ishino. One day, coming across a wanted flyer of a housemaid, she goes to a mansion of the Kiuchis, who have put out the ad. Luckily, she is hired and starts the job as a resident housemaid on the spot. However, things begin to look weird when Koichiro, the son, hands her a maid costume.

A couple years have passed, Matsuzaki is divorced and has a daughter and is still up to his old compulsive gambling, boozing and womanizing even as he stares middle age in the face. At his daughter's school he meets a teacher who's similarily obsessed with horserace betting and who's also frigid - something he does his best to therapize. He also reconnects with his ex-wife, who just so happens to be the literary agent and love interest of another writer of the gambling genre. An epic gambling battle between the two ensues.