Captured in the heart of Palombia by Chahuta Indians and sold to exotic animal traffickers, a marsupilami lands in the port of Antwerp in the 1950s. Managing to escape, he arrives in the suburbs of Brussels and is taken in by François, a young boy who is a fan of animals and whose daily life is far from easy. François is picked on by the local kids, particularly because his father had been a German soldier, an unforgivable crime in those postwar years; a fact he and his mother cannot escape. Both are ostracized for their connection to past events.

This sometimes dark but always hopeful adventure by renowned author Zidrou and celebrated gallery artist Frank Pe portrays a beautiful friendship between a boy and his beast. The authors pay a superb tribute to the fabulous animal created by Franquin in the series Spirou et Fantasio while denouncing the mistreatment and trafficking of exotic animals. A magnificent adventure whose heart is the extraordinary friendship that can unite a child with an animal.