21,5x29 cm | 40 pages

Green Monster shows up one day in the park, where Sandra, Omar and Olivia have gone for a snack. He sees that they have not collected their rubish, and tells his story: he is full of the junk that people leave, and that makes him sad. The children become aware and help him to reduce, reuse and recycle. But all of a sudden, something unexpected happens and it will change everything.