Igor McKroach and his family are cockroaches and live happily in the house of the old Mrs. Atril. But one day she dies and everything changes. The McKroach will have to flee before the new owner fumigates the house and everyone dies. Through the city's sewers, the McKroach escapes and arrive at the Apollo hotel, where they want to live. There they find a type of cockroaches that say that the hotel is their home and that they are the ones who set the conditions and decide who can be there. Ivo discovers then the difficulties of moving freely around the world and the sense of equality.