The series takes place in a vibrant world of houses. Each of them lives his own life. School Masha reads a lot, a private house Vasya grows vegetables and fruits, the high-rise building Petya prefers outdoor games, the Lighthouse lights the way for passing ships. Well, Grisha, the caravan, the most mobile, never sits in place. He constantly travels and gets to know new houses. The main characters communicate, help each other, share the most intimate, in general, they are bosom friends.