Kara wakes up and hears someone knocking at the door. She goes to answer it and finds an interesting being on the other side. It’s a half robot dude that introduces himself as Brainiac. He’s checking on Kara’s brain because she’s been in a coma for two days.
Mon-El woke dude up from hypersleep to communicate with her. It jogs her memory. She remembers the fight with Reign and freaks out. She wants to continue to the fight. Brainiac in the real world updates the folks waiting. J’onn is concerned about their odds without Supergirl.
Sam is chasing Ruby around the house. They are just playing though. Ruby heads out to the movies with a friend as Sam gets distracted by a photo of Reign. She goes to her sand castle and gets a new mission. Fight for righteousness and take down the apathetic.
James and Lena watch the coverage about Supergirl missing at Catco. Lena wants to have a meeting with Kara to tell her that they kissed. They get interrupted when Reign rolls in. She wants them to deliver her message. She declares war on the justice system.
Winn thinks that plywood’s team should fight but they won’t do it. They are from the future and can’t jeopardize their world. All they can say is that Supergirl lives and eventually Reign leaves. Alex goes to see Kovel but that leads to nothing.
Lena and James are at work and James is acting weird. Lena thinks it is because of the kiss but James says that he is out of sorts because of concern for Kara, who has the flu. Immediately Lena decides to go see her. She will even bring soup. James calls Winn for help.
Kara is still in her coma-loft with Brainiac. He thinks she should be ready to wake up but she still can’t get the door open. They don’t know what to do in the real world either. Brainiac thinks she should wake up but she’s not.
Inside the coma, Brainiac says it seems to be a matter of self-preservation. He suggests that she may be scared. She starts punching the door and using her powers. It’s no use. In the real world Alex is begging Kara to wake up. Brainiac admits he’s never seen anything like this and that the longer she stays under, the more likely it is permanent.
Sensors go off. Reign is attacking. Mrs. Plywood wants to battle but he’s not interested. They tell Alex the story of their mission and why they can’t get involved. They have secret information in their DNA and they need to bring it to the future.
Alex calls J’onn for an update on the kryptonite weapons. They’ve got an hour still so J’onn goes undercover as Kara to trick Lena. It works and they talk about James. Once Lena leaves, J’onn hurries back and the DEO rolls out to stop Reign.
Reign shows up at a bank robbery but its a fake. Alex and J’onn are the robbers and they hit Reign with some soil and kryptonite. It’s no use though and Alex gets her leg busted in the process. Afterward, Mrs. Plywood again wants to get involved. Plywood seems to agree now.
Kara is still in her coma but now she knows that she should probably be looking for a sign. She starts looking around. Alex sits with her on the outside and tells her that she is her favorite person. Kara in the coma looks around and remembers the stray cat she took in as a kid. It made her feel less alien.
The others are prepping for Reign. Alex figures out what her next target will be but it’s too late. Reign is already there. Albatross Bay. She’ll go after the prisoners and the guards. J’onn wants to go but he needs help. Plywood and his team are ready.
At the prison Reign is messing things up. She finds Kovel praying to Rao and they talk before Bon Jovi starts piping through the prison. Reign goes to see what’s up and battles team Plywood.
Brainiac is a little distracted in the coma and Kara tells him to go. He comments that Supergirl had a great life but this isn’t Supergirl’s place. It’s Kara’s. Brainiac mentions that Alex called Kara her favorite person before leaving. Kara looks around. She finds her glasses, and a key. She can open the door.
The battle at the prison rages on. J’onn tries to stop her but can’t. same for Plywood and his wife. Kara wakes up and is ready to help. She doesn’t care that its kryptonite. She gets out and jumps into battle. She gets whacked and then hits Reign with a kryptonite syringe. Reign takes off.
Supergirl thanks the plywoods for fighting. He was worried about her and enjoyed fighting with her again. He walks away and she meets Brainiac for real this time. James is still at work when Lena comes in. They talk and then kiss again.
Alex and Kara are drinking wine and catching up. They talk about what it was like when she was in a coma. She grew as a person and learned some things about herself. Alex is glad but was genuinely worried and asks her to avoid comas. Reign went back to the sand castle and finds out she has a team too. Kovel will help her find them.
J’onn as Kara is the best thing ever. I really love that and thought that was just incredible and ridiculous and honestly one of the funniest things on this show probably ever. I’m upset that Alex got hurt and have zero use for James and Lena getting together. I think it’s likely this show will not return for another season so I’ll stick it out but I’m not invested in most of what happens now.