Five years after divorcing her husband, Maika came to clamming for the first time in a long time with her son Kenta. While enjoying the harmony and picking of lightning on the sandy beach, Maika suddenly returned to the inn and felt the man's odor that she had forgotten in her underwear that had been taken off, and she masturbated unintentionally. However, Maika is shaken by Kenta's appearance. And when he is called an aunt and played with like a female pig, Kenta gets involved in the end, even if it is a beloved one.