A cube appears at a research station and steals all the precious metals. Space Ghost is on the planet Quasar helping the Herculoids free a mammoth from a tar pit. The Space Cube attacks the Phantom Cruiser and steals it's power. The cube also captures Jace, Jan, and Blip. The twins meet Cubus who wants to save the logical universe by using Ultima (a super computer) to brainwash all creatures to think logically. Space Ghost destroys Ultima and Cubus' ship is destroyed.
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