The brothers Walter and John decide to spring the Daltons from jail by hot air balloon in order to prove even the most-feared gang can't crack their custom-order safes on board a train. Of course once free, nasty Joe decides to rob the Trick Gulch bank instead, where Lucky -who guessed so- waits for the Daltons, but the balloon rescues them, yet they throw the pilot out. Indians think the balloon is the stolen sun, Rataplan mistakes it for a toy-ball.