The toys are mistakenly delivered to a day-care center instead of the attic right before Andy leaves for college, and it's up to Woody to convince the other toys that they weren't abandoned and to return home.
When Woody is stolen by a toy collector, Buzz and his friends set out on a rescue mission to save Woody before he becomes a museum toy property with his roundup gang Jessie, Prospector, and Bullseye.