Sugawara Hideyo, a single mother, attended a Marriage-Hunting Party and married Makoto Kaeida, a company president. However, Kaeida pretends to be a part-time delivery worker and keeps this secret from Hideyo. Her son Kazunari, neighbor Negishi, and classmate Yoshie insult Hideyo. People who know Kaeida's true identity, including his daughter Saki, protect the couple while keeping the secret.
