With only the pink gem remaining to complete their collection, and so much experience finding rainbow-coloured gems, Savanna and Jeb feel confident about finding the last piece of the puzzle. When the Teleporter malfunctions and is unable to pinpoint the location of the gem, the twins must take their teamwork, ingenuity and risk-taking to the next level.Join Savanna and Jeb on their adventure to the ancient city of Rome, Italy. Landing at the mighty Colosseum, they find themselves fleeing from a mysterious lion. As they race through Rome's historic streets in search of the final gem, they dodge laser beams, explore secret restoration labs, and even enter a peculiar spaghetti art contest.When they finally locate the pink gem embedded in an ancient chariot wheel, they discover they're not the only ones after it. The Thorns have set an elaborate trap, and this time they have a futuristic weapon that can create force field bubbles! With some quick thinking and Great Aunt Shirley's magical bubble gum, the twins must outwit their adversaries again.But retrieving the gem is only the beginning - when all seven gems are united, they combine to form the mythical Rainbow Gem! Armed with this powerful artifact, Savanna and Jeb prepare for their ultimate mission: finding and rescuing their father.
