45-year-old nurse and mother Yoko lives with her only daughter Tsukiko. The duo has a tight relationship that resembles more best friends rather than mother and daughter. Tsukiko's father passed away before she was born and since that time Yoko has always stated Tsukiko's father would be the first and last man she will marry. One evening, Yoko, who is drunk, brings home 30 year old Hattori Kenji and they both sleep outside on the porch. The next morning, Tsukiko becomes confused by the situation and becomes even confused when her mother announces that she will marry the much younger Hattori Kenji. Kenji, who has dyed blond hair, used to be a chef, but doesn't currently hold a job. Tsukiko is shocked by the situation and runs over to her neighbor/landlord Saku's home. Tsukiko then shuts herself off from her mother and her new boyfriend. Meanwhile, people around them try to repair Yoko and Tsukiko's relationship, but there's also a secret between Yoko and Tsukiko.