So this weeks episode starts with a flash back to the night of the particle accelerator explosion at a tar factory with two men holding another man over a boiling vat of tar after some the two men get the information they need they drop the guy into the vat below. As the pair are leaving we see the explosion in the distance and they high tail it out of there, we then see the blast catch the drowning mans foot before he is fully submerged. We there arrive back in the present day to see the tar factory being demolished and as a digger disturbs the ground we see a puddle of wet tar appear and then a hand pop out from this puddle we have ourselves a new meta human.
We then see Dr Wells from Earth 2 working on a piece of tech that will allow him to drain Barry’s speed a bit at a time so that he can give it to Zoom but before he can complete his build he is interrupted by Barry who wants to help him with what he is working on. Wells tries his best to put him off by suggesting Earth 2 technology is to advanced for Barry to understand and that he prefers to work on his own. Barry doesn’t take no for an answer and proceeds to read all the books Wells has in double quick time and sets about trying to help Dr Wells with what he thinks is a way of stopping Zoom and saving his daughter.
After Barry trying to connect with the new Dr Wells by telling him he felt like this was like the old days and that the previous Dr Wells was like a mentor to him at which point Earth 2 Wells snaps and throws a board eraser at Barry’s head stating that he will eventually betray them all and if he was made to choose between his daughter and Barry he would pick his Daughter every time.
We then get to see the new meta human in the form of a tar puddle on the floor of a garage owned by none other by one of the guys who dropped him into the tar at the beginning of the episode. The new Meta human explains what it felt like to be dropped into that tar before deciding to show him instead, Barry and Joe arrive on the scene to investigate the murder and can tell this was a work of a meta human and he will take a sample to Cisco to analyse back at Star labs.
We see Dr Wells finish his piece of tech back at Star labs and manages to fix it to Barry’s suit under the flash symbol just as Barry and Cisco are discussing Ciscos new app that helps track meta humans from his phone. The app goes off and Barry goes off to face the new meta human Cisco has named Tar pit, as Barry is hurtling towards danger Wells activates another piece of tech that seems to storing the speed force of Barry as he is producing it. Barry faces off against Tar pit and manages to stop him by setting off a fire hydrant he then takes the second attended victim who was the other guy who helped create Tar pit to the police HQ for answers on why he after him.
When Barry gets back to Star labs we see Cisco ask Barry if he is feeling ok as he was moving slower than he normally does, Barry replies that he is feeling fine just a bit tired. We then see that Dr Wells has come up with a way of stopping Tar pit by using nitrous grenades and that this will help freeze Tar pit and not allow him to fry his next victim. We then see Dr Wells waiting at a warehouse and who appears none other than Zoom, Dr wells gives Zoom the speed force that he drained from Barry and then advises if he gets his daughter back he will help him drain off all Barry’s speed force. Zoom grabs Wells by the shoulder and advises that he will not give him back his daughter until he has helped him fully drain Barry and that he will torture his daughter for fun over and over again unless he does.
During this episode we also see Iris and Joe try and talk Wally out of continuing his illegal drag racing but this does not go down well and Wally walks out to attend another race, Iris makes guest appearance at this race and advises Wally she is going to do a piece on the racing for the paper. This also does not go down well as this is the last thing that people at these type of races want, Iris also spots the guy who appears to be organising these races and manages to sneak a picture of him for her story. Iris later visits the organiser and threatens too write the article about the races, he does not take to kindly to this and threatens to hurt Iris if she runs the story only for Iris to reveal that she has been recoding the whole conversation.
We see Wally show up to confront Iris about her visit and to warn her to back off as these are not the kind of people to be messed with. Iris advises Wally that he does not need to race anymore as the hospital bills for his mum have been paid in full and she doesn’t eat to see him wrapped around a tree, Wally leaves advising Iris that if she turns up to another race he wont be able to protect her. The team are trying to piece together how the two men that have been targeted by Tar pit know each other, it turns out they were all in prison together even two of them sharing a cell together. They manage to find out who the other person was sharing with and it turns out to be none other than the guy organising the drag races just in time for Iris to show up and say she knows where to find him.
As they Iris and Joe show up Wally is about to start his latest race as the two racers speed off the tarmac in from of them begins to bobble making the two high speed cars start bouncing around. We see a large piece of the tarmac appear in front of Wally’s car as he’s goes up this ramp it aims his car back towards the spectators and the race organiser, Barry turns up and manages to get Wally out of the car in time before seeing the car flying towards Iris. Barry sets off to stop any debris hitting Iris and he manages to push away a wing mirror but cannot seem to catch a rather sharp looking piece of glass heading towards Iris no matter how hard he tries and it ends up hitting her in the shoulder.
Luckily Iris is taken to the hospital and the injury isn’t serious and she is going to need to rest up. We go back to star labs and the team are trying to figure out why Barry has been getting slower and we find out that Barry’s speed force has decreased by 2%, eventually Dr Wells can’t take it anymore and advises that team that is was him and shows them the device and that he is working with Zoom to get his daughter back. Joe loses it and punches Wells in the face and chucks him in one of the Meta human cells before he kills him. Barry and Joe then go off to deal with Tar pit once and for all by using the guy the arrested earlier as bait and sure enough Tar pit takes it and ends up being nailed with two nitrous grenades by Barry.
The episode end with Barry saying that the team need to decide if they are going to send Dr Wells back to Earth 2 and then uses the implosion grenades that Wells has designed to close the portal. The team go down to the cells and Dr Wells thinks this is goodbye and they have agreed to let him go home only for Barry to announce that they are a team and they would not send him back alone and they will be coming with him to Earth 2.
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