TMS part 51: Dipper missing?! The Halls of Descent

So It looks like Dipper has been kidnapped by Gideon without many realzing it so Gideon can use him to get to Mabel as he loves her. Mabel decides to save him and she takes Isabella, Phineas, Lizbeth and Django with her. Meanwhile Cortana is escorting the crew to where they will find their way to the 3rd and when they arrive, they begin learning things mostly A Descendant prophecy which is posssibly foreshadowing the next story that I may do