Complex sentence: Three years after the events in "Toy Story", Woody prepares to go to cowboy camp with Andy but his arm is accidentally ripped so Andy leaves him behind and his mother puts him on the shelf.
Split into simpler sentences: Three years after the events in "Toy Story", Woody prepares to go to cowboy camp with Andy, but his arm is accidentally ripped. Andy decides to leave him behind, and his mother puts him on the shelf.