PacWorld is under siege by ghosts and there is little Pac-Man can do about it without fresh berries from the Tree Of Life, which is hidden somewhere in the Netherworld and guarded not only by legions of ghosts, but fierce monsters as well!

When Pac and friends keep defeating all his ghosts, Betrayus, with the help of the demented Dr. Buttocks, decides to clone an army of Netherworld monsters. Lucky for Pac, one little monster isn't really a monster at heart.

Dr. Buttocks amps up the stakes by inventing the Molecular Magnifier to create gigantic Monsters. Meanwhile, Pac is in for more trouble than he bargained for when he adopts the little monster that saved his life.

Lord Betrayus plans to render Pac powerless by getting Inky, Blinky, Pinky and Clyde to feed Pac so much he'll be too full to eat anything else... power berries or ghosts! But Pac isn't getting full, even when he's eating everything in both worlds!

Pac and his pals grow suspicious when President Spheros starts behaving strangely. They eventually realize that Spheros has been possessed. Unfortunately, he declares Pac and pals Public Enemies and puts out a city wide Pac-Man-Hunt!

Pac gets a huge zit right before Class Picture Day. The more stressed Pac gets about it, the more zits appear, so Betrayus sends his meanest-mouthed ghosts to stress him to the breaking point - or in this case - popping point!

When Pac and his pals get blasted into the past, he not only finally meets his parents -- and his Baby Pac self -- but has an adventure with them during PacWorld War I.

PacWorld Kingpin Obtuse is working for Betrayus and uses Skeebo to try and steal Pac's power berries, but the plan backfires when Skeebo uses the berries to turn himself into the super-powered Heebo-Skeebo.

Pac-Man is physically controlled by Betrayus when he swallows a special micro-chip, and Pac's friends must help him infiltrate the Netherworld spy-style to retrieve the remote controller.