A little girl and her live-in monster learn about what makes them different-and what unites them. Based on Chris Hallbeck's webcomic of the same name, Pebble and Wren follows human girl Wren and her live-in monster, Pebble, as she teaches them all about how the human world works - from why the moon changes shape to why we don't eat candy wrappers - while trying to unlock special abilities without which Pebble will have to return to the monster forest. A silly, sweet, and sometimes gross tribute to friendship for fans of Calvin and Hobbes and Catwad.