The series tracks Pac's daily activities as he saves Pac-World. Alongside his friends Cyli and Spiral, Pac and his buddies deal with teenage problems while defending Pac-World from a ghostly army commanded by the villainous Betrayus. The residents of Pac-World do not want Betrayus and his ghostly minions to return from the Netherworld and cause chaos. Consequently, President Spheros teaches Pac and his companions the legend that prophesies a round, yellow Pac-Worlder will rescue the planet. As the only round, yellow citizen, Pac is the one for the task. Every adventure follows Pac and his friends as they attempt to send the ghosts back to the Netherworld, thereby saving Pac-World.