Toshizawa Rena knows everything there is to know about Italian Motorcycles - she owns a repair shop and has a good business dealing with exotic bikes. Miyagi, a 19 year-old free-timer, rents the apartment upstairs. It's cheap, but it's noisy as hell living above a motorcycle shop. But Miyagi has the hots for the older Rena, and he will do what he can to help Rena, despite the fact that she knows far more about what she's doing than he does...