A young karate girl gets in a fight, but the bad guys discover her weakness (which is snakes). They basically cause her to faint by throwing snakes at her.
The girl, Suzuka Asahina, is trying to lose weight in the steam room to be able to jump higher in her athletics team. She stays in too long and passes out due to the heat. The guy gets her out just in time and she wakes up in bed a while later.