The evil Dr. Porkchop has invaded Toy Town and is stealing its gold supply. The town's residents summon Sack Thing to stop him, but complications arise immediately: Porkchop has rewired the Space Cruiser, locking out its flight systems. Buzz Lightyear intervenes, hurling Sack Thing and the Cruiser back toward the action using a throwing technique from his Space Command training. With Buzz and Woody at their side, Sack Thing sets off to bring Dr. Porkchop to justice and recover the stolen gold.