The series tells the story of four strange elephants, which are unlike that of any other elephant in the world. One of them has a big head, the other has big feet, the third one is lazy and the last has pretty eyes. Big-Head is the smartest elephant in the world. He’s invented a garbage-eating machine, using that garbage as the fuel. Although it’s a great invention, there is a tiny little problem: it smokes a lot which concerns the other jungle animals. But Big-Head comes up with a bright idea…

Shahrokh Marzooghi is a young children’s author whose humanistic, straightforward view over different matters encourages children to be curious and inquisitive. Hassan Ameh-kan, the illustrator, has won numerous national and international prizes, namely Nami Island International Children's Book Festival (2018) and the 3rd Global Illustration Award (2018).