Akari Mitani becomes a private swimming instructor for the son of a wealthy businessman. One day, after being secretly filmed changing clothes, she is captured by a rich, wheelchair-bound pervert obsessed with competitive swimwear. Her days of intense training begin, growing increasingly extreme in both acts and attire. She is forced to serve the wealthy man's butler and colleagues, enduring relentless abuse. The high-cut swimsuit digs into her skin, her nipples visibly wet and glistening with saliva, her pussy aroused and dripping even from just wearing the swimsuit. In an unexpected twist, the supposedly paralyzed old man rises from his wheelchair and rapes her himself!