This is how Ryan and the gang meets Anna and Elsa and Anna's head is frozen goes in Crash's, Thomas' and Ryan's Adventures of Frozen.
[Meanwhile, at the Autobot Base, Ryan is getting ready to visit a new world]
Duncan (Total Drama): Hey, Ryan. What are you and Cody doing?
Ryan F-Freeman: Getting ready to go to another world. Ratchet told me that earlier.
[Ryan goes to his TARDIS with Cody]
Sci-Ryan: Ratchet, activate the groundbridge.
Ratchet: On it. [does so]
[The gang goes through the Groundbridge and Ryan's TARDIS arrives in