Leonard Jetson raised his children to always work hard, but that translated into them following his foot steps and putting work above everything. After years of hard work on his invention he invites his family to come and see. However the many years basically alone besides frequent visits from his nephew have driven the man mad. He forces his two daughters and his nephew into his new invention, the marble, hoping it would forcibly show that he does truly care. On the inside Carrie, Leo, and Rona meet up with their thought to be dead brother, an ex-boyfriend, an abandoned child, and a few others along the way. Their one goal, to get everyone out.