S1, E4: Sckraab, ruler of Dark Earth, arrives to put into place the final pieces he needs to enact his plan. He desires to bring his armies over using The Teather to conquer and rule both worlds. His true evil Is revealed as he shows exactly how far he is willing to go to make this a reality. Summer discovers her true origin and comes to terms with the role she must play in stopping Sckraab and his minions.