After living in Tokyo for two years, Satoshi quit his job and returned to his hometown to start afresh. One day, Satoshi's brother comes to visit him with his wife Moka and their baby. While everyone is relaxing in the living room, the baby starts crying, so Moka suddenly takes out her breasts and starts breastfeeding in front of everyone. Satoshi is captivated by Moka's large breasts and is scolded by his mother. Seeing Moka's large breasts, which he has long admired, Satoshi can't contain his excitement and his fantasies run wild. However, he can't stand the fantasy alone and asks her to let him drink her breast milk, but...