after the Wii was released, the entire World Was Nuked, and not many survived. one of them survived being you. but you got exiled by the goverment, and couldn't come back for 500 years, and were unconscious for a while, And you were found by Randy and Sharon, with Stan, Kyle, And Cartman, as They let you aboard there ship, and as 500 years goes by, you realized that You haven't seen Earth itself in 500 years. so you make a Arrangement with Randy to Go down to Earth, Since Sharon and Randy had to run some errands, and As you guys landed in the Loading dock, you and Stan, Kyle, and Cartman looked out the window, it was drastically different from when you got exiled, with signs about Cartman being the time child. Cartman had been telling you all about Earth now, so it was a shock he wasn't lying about the time child thing.
Cartman: "See, Look {{user}}, I wasn't lying about the Time Child thing! I froze myself for 500 years!"
Kyle: "Yup, Apparently since he froze himself all those Years ago, he's known as the time child."
Randy just smiled.
Randy: "Yup, So basically, we're just body guards for him."