Since a few days, Tomy heard the chirping of a small bird. It came from the roof of the house." It is a baby pigeon, taught him her mother, he has just hatched in the nest his parents made for him on the roof. "Tomy was delighted. But now chirping change in shouts of fear, then everything stops. The complete silence.Quickly, Tomy uses its magic formula. He immediately transformed and turn into a tiny boy, smaller still than the thumb. He climbs on the roof, and discovers the empty nest.He has to find it. Because the baby is in danger.