As soon as Felicity walked out of the foundry, she wished she hadn't left. She had nothing with her. No phone to call Diggle, no car keys, nothing. She felt helpless and she hated it. She knew Oliver could beat Slade, but what if something terrible happened and Slade beat him? She would never forgive herself for leaving if he did, but she knew Oliver wouldn't have been able to fight if she had been there. He would've been too worried about her and her safety to focus on Slade.

Felicity thought for just a split second what she was going to do before a plan came to her. She ran to the nearest store, which was thankfully only a block away, and asked to use the phone. The employee behind the counter simply shrugged and handed her the cordless phone. Felicity had never been happier to be good at numbers as she was in that moment because she had Diggle's phone number memorized.

It rang twice before Diggle answered and Felicity sighed in relief.

"Hello?" She heard Diggle answer on the other end of the call. She was confused for just a moment why he sounded detached before she realized it was because he didn't know it was her.

"John, it's Felicity. I need you to have Lyla call Amanda Waller. Oliver and Slade are in the foundry and I'm worried. I have a plan, but I need you to do exactly as I say." Felicity told him, not even pausing to take a breath. Every second counted and she knew this would work.

Felicity told John about her plan as fast as possible while Lyla called Amanda and the plan was underway. Felicity waited at the small convenience store for Diggle and it was killing her to just sit there, not knowing what Oliver was going through or if he was even alive.

Twenty minutes later, an A.R.G.U.S. van pulled up outside the store and Felicity ran outside to meet Diggle. He was getting out just as she got to the van and she threw her arms around him, happy he came. She knew never to doubt Diggle, especially when Oliver was involved.

They got in the van and made their way to the foundry. It took less than a minute to get there and Felicity had lost all of her nerve in that short ride. What if her plan didn't work? What if Slade already killed Oliver and left? Felicity shook her head, trying to get rid of her doubts. She knew in her heart Oliver was strong enough to beat Slade. She needed to hold on to that.

When the van pulled up outside the foundry, everyone climbed out. There were 3 A.R.G.U.S. agents, Felicity, and Diggle. She didn't need the agents for the plan to work, but she didn't question their presence. Amanda liked to know what was going on even though she would never give others the same courtesy. Also, if the plan worked, they would be taking care of Slade.

Felicity used Diggle's phone to pull up the cameras inside the foundry and saw Oliver and Slade still fighting. Both men looked pretty banged up but they were still going strong. Felicity couldn't help the relief she felt at seeing Oliver still alive and kicking. Literally. She smiled at Diggle and nodded, letting him know the plan was ready.

Felicity remotely shut all of the lights off as Diggle went to the door of the foundry. She knew this would throw Oliver off, but he just had to hang on long enough for Diggle to get in there and help. Felicity watched as Diggle went into the foundry and all she could do was wait.

Diggle had told her to give him ten seconds before turning the lights back on so he could get in a good position for their plan to work. It had been the longest ten seconds of her life.

When she finally got to ten, she turned the lights back on and saw Oliver and Slade rolling around on the ground, wrestling with each other. At the moment, Oliver was pinned under Slade and Felicity began internally cheering for him.

She saw Diggle in the corner, getting his gun ready. While she could see him, she knew Oliver and Slade hadn't. He was hidden well and they were busy trying to kill each other.

Felicity smiled because she knew this was going to work.

She watched as Diggle crept out of the corner of the foundry slowly, raising his gun to Slade. Oliver being pinned under Slade probably made this easier because it gave Diggle the perfect shot to take him down. When he was about ten feet away from them, Diggle aimed and fired his gun and Felicity watched as the tranquilizer went into Slade's back. Oliver looked just as shocked as Slade when Slade realized what had happened. He turned around and saw Diggle, but before he could retaliate, he fell, unconscious, covering Oliver.

Diggle went over and helped Oliver move Slade to the side and gave Oliver a hand in getting up. The two men smiled at each other and Felicity couldn't wait outside any longer.

She went into the foundry behind the 3 A.R.G.U.S. agents, who handcuffed Slade and carried him to the van. They never said anything to anyone, but Felicity wasn't surprised. She was only relieved they were there to bring Slade to A.R.G.U.S. because that meant Oliver didn't have to bring him.

Felicity ran up to Oliver and threw herself in his arms. She was relieved they could finally be together without watching their backs or worrying about Slade.

She smiled up at him as she pulled away and she realized he wasn't smiling at her like she thought he would be.

"Oliver, what's wrong? You won! You beat Slade. It's over." She said to him, unsure why he seemed upset.

Oliver grabbed her by her hips and pushed out of her embrace without meeting her eyes. "I'm sorry, Felicity. I just… I can't do this."

He walked around her and out the foundry without another word.

What the hell had just happened?