Bree and Ferrance are conjoined twins who have lived together for 25 years. Their personalities go to extremes. Ferranz is used to relying on them and feels that he can no longer live without Bree. On the contrary, Bree thinks there is nothing wrong with living alone, but they always believe that they both exist at the same time to give the most complete feeling. Until one day, a girl named Penny appeared in their lives, and the sense of integrity they wanted finally appeared, but the two brothers did it for this girl.