A window remains open at the St Pierre hospital, in spite of late hour of the day. It seems that something is happening inside. Irresistible cries, intoxicating noises, luxuriant plants. Is there a party going on somewhere? The hospitalised children freely and happily let their untameable energy flow to invade the neighbourhood. In fact, they need you, the spectator, to take the Marolles on journey inside the beautiful meanders of their wild nature.