QT beams Dandy and Meow onto Planet Planta, a planet inhabited solely by sentient plants, in search of a rumored rare alien known as "Code D". A mishap with the transporter sends Dandy to the planet's northern hemisphere populated by the cerebral Vegims, while Meow is caught by the tribal Movies in the southern hemisphere. With the aid of Vegim scientist Dr. H and his daughter 033H, Dandy traverses the planet's psychedelic landscape to the north pole where Code D is located. On the way there, the three are halted and arrested by Vegim leader Cocamuka, but they are later found and saved by Dr. H's friend Niinii. Meanwhile, Meow is fattened up by the Movies, unaware that they intend to eat him. Dandy discovers that Code D is actually a meteorite that caused the planet's flora to evolve into intelligent beings. Dandy's attempt to remove its stone inadvertently causes all the plants to regress into non-sentient organisms.