The Chief of the Native Palombia refuses to sell his land to Felicia's company, but claims he'd reconsider if they ask again later... as in 100 years from now! Unfortunately, the company's lead scientist, Maxwell, invented a serum called "Grotox", which causes any who drink it to age at an alarming rate! Blu Print and Ollie Stroy got away with slipping Grotox into the ceremony beverage the Chief used that night to initiate Hector and his Aunt Diane into the tribe... Hector didn't have to touch it, because he's still a child, but the next morning Aunt Diane was seen as an old woman, confused as to what's really going on. The Chief also aged, and Blu Print convinced the "old man" he's slept for 100 years, thus has to live up to the deal he'd sign away his land. As Hector tried to get a sample of the beverage to find a cure, Mars (being naive and drawn to the fruity aroma) drinks the potion before pursuing Blu Print and Ollie Stroy, and he overhears from the trees how they gloat their trickery, but as he swings in to stop them, the Grotox kicks in, and Mars begins to weaken with false aging (even his golden-yellow fur with blackspots lost its luster, as it turns silver with dark-gray spots) and became easy to catch, but still a threat when Maxwell discovers the effects of Grotox is temporary. It'll take the whole Marsupilami family to set things right!