Finn: Woah, Jake! what do you think this big blue box possibly-a-time-traveling-starship-thingy could be? Jake: Duuude?! We gotta get to the Lich! Finn: Oh yeah..!
Meanwhile, in the TARDIS, Rose, Micki and the Doctor were accidentally traveling between dimensions. Tumblr post: [link] There's one thing out of place there, can you guess what it is?