When his little sister loses her favorite stuffed toy, Lucky Ducky, on the night before the first day of school, Little Critter comes to the rescue.

Little Critter celebrates fall by going to the Fall Festival, experiences a big storm, takes a trip to the firehouse, has a great Show and Share at school, builds a snowman and feeds him snowball soup, searches for a missing triceratops bone at the museum, and helps a neighbor.