Relics picks up immediately where episode 3 left off The Empire is in hot pursuit of Rex, Wulf, Gregor and the crew of the Ghost, this episode more than any other in this series really paid homage to the OT...specifically the battle on Hoth in ESB and Luke's Death Star trench run in ANH.
Seeing the 3 AT AT's pursuing the clone wars era relic was humorous.
And I enjoyed seeing Ezra as the bridge builder between Kanan's distrust of the clones and Rex's reluctance to help the rebels. He truly lived up to his name!
This was a great episode throughout and the scene at the end where Rex see's Ahsoka was the icing on the cake!