Moominmamma discovers a strange machine in her cabbage patch, and when Moominpappa starts fiddling with it, he turns himself and Moomin Troll invisible! Each knob on the machine causes strange and unlikely events to transpire, until the Martian finally recovers possession of its property. Moomin and the Martians is a lighthearted comic originally created by Tove Jansson in 1957, bound in a laminated paperback collector's book.