Ayumi is a married woman living an ordinary life with her kind husband and young son, but she feels bored with her daily routine. One day, she discovers her son is using a dating site and, out of curiosity, she casually posts her profile. She quickly receives a message from a virgin boy named Mikami. His provocative words stir something deep within her. Initially hesitant, she gradually becomes addicted to the thrill. Just as she's drawn into this secret excitement, another man contacts her—ushering in a new turn of events that threatens to shatter her everyday life.