A capsule drops into the garden containing a letter from a mysterious 'adventurer' named Ernie. He wants a pen-pal, so the gang set off on an expedition in a rocket to other worlds to other worlds, where Mo learns a valuable lesson.
A capsule drops into the garden containing a letter from a mysterious 'adventurer' named Ernie. He wants a pen-pal, so the gang set off on an expedition in a rocket to other worlds to other worlds, where Mo learns a valuable lesson.