Trillions of years have passed since the Mooroo race burst forth from the pairing of two alien creatures. For eons, the Mooroos have reigned over many territories, fulfilling their unquenchable desire to preserve the species.

The instinct to flourish burns in Soomooroo and Moochoomoo, longtime companions who live on Voormoo, their celestial home. When Soomooroo wins the deed to a large galaxy in an ancient card game, the pair launches a scouting expedition to explore every expanse of the boundless universe.

In the process, they encounter a range of alien species, including the...