Yes. You find the Plasma Base, where Donn (me), Hannah (Rival) and N climb to the top, and when you reach to the top, they test you one by one before you enter, and then Kyurem pops up and challenges you to test you, since Donn and N have Reshiram and Zekrom reverse-respectively. Then the last part of the storyline happens.
Oh and hex ain't hard.