A cash-strapped documentary maker decides to make his newest documentary about a mollusk shell he finds living in his Airbnb with his friends.

Marcel is an adorable, 1-inch-tall shell who ekes out a colorful existence with his grandmother, Connie, and their pet lint, Alan. Once part of a sprawling community of shells, they now live alone as the sole survivors of a mysterious tragedy. However, when a documentary filmmaker discovers them, the short film he posts online brings Marcel millions of passionate fans, as well as unprecedented dangers and a new hope of finding his long-lost family.

Marcel, a googly-eyed, 1-inch-tall mollusc, and his only relative, wise grandmother Connie, live a peaceful, solitary life in a vacant house now used as an Airbnb. However, when young filmmaker Dean stumbles upon the minuscule pair, his fascination with documenting opens up a world of endless possibilities and friendship. As a result, this unexpected event prompts tiny Marcel to reevaluate his life. And as Marcel becomes famous, he realises what matters in life. Will Marcel, the shell with shoes on, ever reunite with his missing family?—Nick Riganas