Like always, plan is always better than in reality. Sam is rushed into putting her device into work to save a village but on the most important moment, it fails and they are visible to Ori. She is badly shot and on last moment Cam manages to hide only he and she and house where they are.
So, the episode is mostly about a lot of trouble they have to come out. Vala has another visit by her friend from the other universe, another time imprisoned in Ori ship and another try to turn her into follower of Origin. But this time it looks she manages to show Tomin that Ori are not as pure as they always thought. He do not doubt the Origin but he starts to doubt the prime. That's good.
It was quite good to see Sam in very bad position. She has always been the one who has no troubles.. never gets too bad hurt (ok.. sometimes she get..) anyway.. good episode, developing major storylines and refreshing