A man is encouraged by married woman Marina to join the gym and they start training together. A love-hate drama full of carnal desires unfolds, involving the trainer and others, Megumi Marina's body. Contains 4 sex scenes and 6 scenes, including "ass job in a competitive swimsuit," "M-sexual training sex tied up with rubber bands," "forced sex in the shower room," and "bedroom gangbang 5P in a see-through leotard covered in oil."