Karen, who married a man with a stepson, was desperate to become a real mother. Suddenly faced with a new family, she tried too hard to build a good relationship with her stepson, even causing trouble with other parents of his classmates... Still, Karen believed that happiness awaited her in the future and lived each day to the fullest... However, one day, during a trip she was invited to by a parent's friend, she was informed that her stepson had an accident. 'For my son and family―.' In humiliation, she accepted the act...
