The mystic bean of Jack the Thief is misplaced, but G.G. Bond and his companions take it upon themselves to plant it. Remarkably, the seed germinates into a colossal beanstalk that ascends to a newly discovered world called Titan Island, high above the clouds. The group unwittingly sounds the alarm of the Titans, leading to the beanstalk's rupture. The combination of fending off the Titans and Jack the Thief's efforts to purloin treasure and undermine the team poses a dilemma for their safe return home.