This episode seems mainly concerned with bringing hope and faith back into Team Flashs lives.
As we all know, mostFlashepisodes are built on three things: heart, humor, and spectacle.
Thankfully, this hour wasnt lacking in any of those.

Credit: Katie Yu/The CW
Does her technological know-how make that much sense?
No, but who cares?
For every moment of sadness, theres another punchline coming around the corner.
Iris doesnt want to talk about it, so she leaves rather abruptly.
Iris doesnt have much time to brood because an explosion ripples through Central City.
As she heads to S.T.A.R.
(ASIDE: Why is Cisco surprised by the damage this samurai can do with a sword?
Hes seen how vicious the Green Arrow is with a bow and arrow.
and orders him to focus his attention on defeating the samurai because they arent sure this will even work.
She agrees, because she just cant say no to her bestie.
(The other sign the show is moving past the angst?
Joe immediately forgives Caitlin for everything she did last season.)
Hes talking in nonsensical sentences and obsessively drawing symbols on the walls of whatever room hes in.
So they place in him pipeline as they venture to figure out whats wrong with him.
Cisco admits to Caitlin he really only brought Barry back because he missed his friend.
Youve got strength, baby girl.
You just need a little faith.
(Joe is going to regret this pep talk in a minute.)
So the samurai takes off with her and it turns out shes right!
Caitlin examines Barry and reports that hes now faster and healthier than ever.
Barry reveals that the last thing he remembers before saving Iris is entering the Speed Force with his mother.
Caitlin returns to the bar, and that shady guy knows shes done working forAmunet Black.
Meanwhile, Barry and Iris return home, and Barry thanks Iris for keeping everyone together in his absence.
He also reveals how his time away has cleansed him.
Iris, its going to be great, he says.
This wouldnt be aFlashpremiere without a dope stinger, and this episode doesnt disappoint.
The hours ending reveals who sent the samuroid after Team Flash: The Thinker, played by Neil Sandilands.
His female associate asks what he wants to do next, and he ominously says, Im thinking.