Jake, Marika, Pindor, and Bach 'Uk, a friend they met along the way, run to the temple where they can safely reach possible help to fight the Skull King and his invading army of Grakyls, while Kady helped them escape. At the temple they noticed that the green gem inside it was contaminated.
We have to get to the temple!
Jake, Marika, Pindor, and Bach 'Uk ask the ancient neanderthal tribe the Ur for help, and the Ur say yes. Jake also says he has a plan to fix the contaminated green gem, and that if he can fix the green gem, the protective wall would come back up.
Jake told Marika and Bach 'Uk his plan and then got into position. He told one of the Grakyls that he demanded to see the Skull King. When the Skull King came, Jake reflected the light coming through the entrance of the temple against his bronze shield and onto the green contaminated gem.
The Skull King and his armies retreated, and as a gift for saving Calypsos, the town leaders allowed Jake and Kady one more trip into the sacred temple, to hopefully find something about how to get home. There they found their Father's watch, but the hands were going backwards.
let's try and fix that...
No Kady wait!
Kady tried to fix the watch by winding it, but then the gears in the floor started spinning really fast and in a giant blast of light Jake and Kady reappeared back in the museum exhibit with the small pyramid, as if nothing ever happened. But deep inside, Jake knew that their adventures weren't over just yet...