Myeongok is a common 49-year-old mother leading a regular life with her family. However, when two individuals from an alternative universe appear out of nowhere and request her assistance in rescuing their world, she declines. With domestic responsibilities and commitments, she cannot afford to put everything on the line. Nevertheless, if her daughter is also implicated, will she have the will to reject? Will Myeongok be able to discover a means to safeguard her family and rescue the other world simultaneously?