Surprised at the lack of discussion here today so far
Anyway, quick run-down of what's happened. Ash & Co. have arrived at the ruins so far, being picked up by Cedric's assistant. Team Plasma are stalking them, while Team Rocket are stalking Team Plasma due to a tracking device they placed last week.
Cedric has solved a puzzle in the ruins which has created an opening into a vast area (that looks suspiciously like the ruins from the TR VS TP ep).
Cedric finds the Light Stone which sets off a light showing his location to N and Team Plasma separately. They exit the ruins.
After discussion of the legend, N appears while TP grunt Brad watches on. Angie & Colress are on a plane and receives orders from Ghetsis
Dare da - Crustle
N tries to convince Cedric that the Light Stone shouldn't be accessed to no avail, so he comes down and steals it, explaining again what Reshiram did.
N runs off while Ash makes chase. Ash gets stuck in the ground, and N tries to aid causing them both to fall. N drops the Light Stone down in order to save Ash.
They both land safely in the ruins while Cedric, Iris and Cilan are surrounded by Team Plasma, as are all the archaeologists. N explains how he sees Pokémon get mistreated by humans often, left in box in the streets and so forth. He says that it's not true of Ash or Pikachu, but it still happens.
Cedric's assistant manages to attack Angie, but Angie tears off his disguise and it turns out to be Looker. Colress then appears and manages to turn all the wild Golurk to do his bidding. Iris and Cilan send out Dragonite & Crustle to try and calm the Golurk.
The battle ensues, with Jessie & James watching from above, but the battle doesn't bode well and Dragonite & Crustle fall. N hears the battle and decides to act.
End of episode.
The White Ruins! Ash VS N!! 
