Karen, who married a husband with a stepchild, was desperate to become a real mother. She tries to build a good relationship with her suddenly new family and her son-in-law, which causes trouble with the parents of her other classmates... Still, Karen spends her days believing that there is a happy family ahead of her... However, one day, she was told that her step-son had an accident on a trip she had been invited to by her guardian's friendship. She says, ``If it's for the sake of her son and family...'' She is humiliated, but she accepts the act...
