During that nuclear storm, Barry was not injured and did not receive radiation. Strangely, he and Caitlin decided to return to the scene of the explosion. Ronnie wakes up from the explosion and is successfully separated from Professor Stein. What a surprise to them all. But Ronnie and Stein don't seem to be quite compatible.

"Barry, follow me! I also made a major discovery. Joe looked at Barry and said lightly, they were all clear about this situation.

"I see." Barry looked at Joe, nodded and said, these are also things they understand, so this is the situation they want to solve.

As soon as Barry returns to the police station, Joe takes him back to his childhood home. Joe shows Barry what happened and tells Barry about the blood, which Barry can't believe.

"Barry, the blood we found is also yours, which means that you have existed in the past, and this is what I want to tell you." Joe looked at Barry and said solemnly, he was also quite unimaginable.

"How is this possible, how can I travel back in time?" Barry said in surprise that it was a question they had in mind about that situation.

"Nothing is impossible, Mr. Donnas, I should have told you! You should know the importance of time travel, and you should know that this is what we think about. Joe looked at Barry and said solemnly, he also knew how to solve the problem was the way they should go to the end.

Barry remembered that what Mr. Donus had said was called time travel. Iris is a colleague who wants to investigate the situation in the cutting-edge lab, and he suspects that Dr. Wells deliberately caused the particle accelerator to explode.

"Well, I see, Joe, but I'd like to find out about it, and that's what I'm supposed to do." Barry looked at Joe and said affirmatively, these are also things they understand, everything is also in the process of development, and it is the situation that they should solve.

"Barry, you should know that Dr. Wells has a lot of secrets, you better trust Mr. Donus! Although he is also mysterious, he is always there to help you. Joe looked at Barry and said solemnly.

"I also know this, maybe I've encountered too many things recently! I can't figure out what those questions are. Barry said thoughtfully, they knew a lot about that situation.

"Besides, I suspect that the explosion of the particle accelerator was the only cause of my Dr. Wells, and I still don't know the cause, don't you think it's quite strange?" Joe looked at Barry and said solemnly.

Barry finds Professor Martin. Asked about time travel, he told Professor Martin about the problem he was facing. Catelyn and Ronnie go on a date at the restaurant, and Ronnie wants to take Catelyn out of here. But at this moment, there was a shooting in the restaurant, which turned out to be the American army. The general captures Ronnie, and the Flash learns of Ronnie's condition from Martin, and when he arrives, he is concentrated by the debris specially developed by General Arryn, and Caitlin arrives in time to rescue the Flash and Ronnie.

Qin Tian also knew that Barry was in some danger, and he asked the others to prepare to solve such a thing. Qin Tian turned the situation into a different situation, and these were only part of the problems they wanted to deal with.

"Barry, it's an inopportune time, I'm here." Qin Tian looked at Barry, injured and said solemnly.

"Mr. Donnas, why did you go here?" Barry said in surprise, seeing Qin Tiancai appear, he couldn't think of it at all.

"I'm just trying to make your power stronger, and that's what I'm telling you." Qin Tian looked at Barry and said lightly.

Qin Tian quickly dealt with General Ailin's people, these are also things that he can do, those forces are not his opponents at all.

"Barry, get out of here! We still have a new team. Qin Tian looked at Barry and said lightly, it was also a situation that he had always understood.

"I see, Mr. Donnas, you should get out of here!" Barry looked at Qin Tian and said gratefully, he also knew that he should solve it.

The cutting-edge laboratory saw through the conspiracy behind the accident. To ensure the safety of the two Firestorm parties, Ronnie and Caitlin live at the Barry house, while Martin is at the cutting-edge lab. Dr. Wells approached General Arryn, who revealed his desire for Firestorm. Joe could see that Barry had been under a lot of stress since he learned about time travel, and Barry knew about his suspicions about Dr. Wells. Barry was convinced that Dr. Wells had nothing to do with his mother's death. In the cutting-edge laboratory, Martin, who had been drinking with Dr. Wells, suddenly felt dizzy, and General Arryn walked in with someone and took Martin away, it turned out that Dr. Wells had betrayed Martin.

"Dr. Wells, I didn't expect it to be you!" Martin looked at Dr. Wells in disbelief, a little surprised for the guy.

"What if it's me, it's of no value to me at all." Dr. Wells drank, looked at Martin, and said coldly, not at all the same as it was.

At the same moment, Iris discovers that Burning Man is the one who lives in her house and is with Catelyn. Through his body, Ronnie felt the pain Martin was suffering. Ronnie asks where Martin is now being held by scratching his arm with a piece of glass. Martin, on the other hand, communicates his location through Morse code. Sisko unlocked the code and learned that it was Military Region 27. The Flash and Martin arrived immediately. At the moment when General Arryn is about to shoot, Barry rescues Martin, and Barry is hit by a chemical gun.

"Barry, how are you?" Martin said in surprise that he felt quite good about Barry, so he didn't want Barry to be hurt, and these were also situations they didn't expect.

"I'm fine, you get out of here, Ronnie and Martin, I need you to get out of here." Barry said solemnly.

This time, Ronnie and Martin choose to merge again, and this time they don't resist each other, and the Flash arrives in time before being shot dead by Arryn. After returning to the cutting-edge lab, the two tried to separate again. But Ronnie had to leave Catelyn. They decide to go to Pittsburgh and study themselves further, and the mystery man takes General Aylin and takes him to that mysterious sewer, where a man named Grud kills the general, and the mystery man unveils his face, which is Dr. Wells.