Based on the short film series, this full-length animated feature follows a shy young mollusk named Marcel as he discovers the world through his eyes. Marcel lives with his grandmother and takes care of Alan, his pet lint. When a documentary filmmaker shares an online snippet of Marcel, the shy shell goes viral. Soon, Marcel goes on a life-changing adventure to find his lost family. The film stars a voice cast including Jenny Slate, Thomas Mann, and Isabella Rossellini. Directed by Dean Fleischer-Camp.