Oliver was surprised when he got a call from Barry.

"What's going on?" Oliver asked.

"Vandal Savage." Barry said, much to Oliver's surprise.

"That son of a bitch is still around." Oliver asked.

"I guess some things never change. If you guys don't mind, we could use some help, especially since that Rip Hunter guy Sara told us about is here saying that apparently Savage's plan involves a lot more than just killing Carter and Kendra." Barry said.

"We'll be out there as soon as we can." Oliver said.

"Actually, we have the Waverider with us, so we'll just come to you." Barry said.

"Give me a location to have my team meet you at." Oliver said and Barry gave him the location.

"Alright Ollie, I'll bite, why exactly are we here?" Thea asked as she, Oliver, Laurel, Roy and Winn all gathered on an empty rooftop.

"Believe me Speedy, you wouldn't believe me if I told you." Oliver said as suddenly, a giant spaceship appeared out of nowhere.

"What the hell is that thing?" Laurel asked.

"I'm pretty sure it's our ride. Barry was rather vague, but he said something about picking us up and I'm assuming this is our ride." Oliver said as the ship landed and a door opened to reveal Barry.

"Good guess Oliver. Come on board and everything will be explained." Barry said.

"Cool." Roy said as Oliver walked up onto the ship and he and Winn followed and after some hesitation, the girls followed.

"Whoa, this place is sweet." Thea marveled as she took a look around the Waverider.

"Oh, I probably should've told you this before, but there are some new faces and my team already revealed our identities to them and the captain, this Rip Hunter guy, claims he's from the future and already knows yours." Barry said.

"Thanks for the heads up." Laurel said as they approached the bridge.

"Mr. Queen, it's truly an honor." Rip said as he held out his hand, which Oliver shook.

"It is?" Oliver asked.

"Of course, after all, in the time I'm from, Green Arrow, Flash, Supergirl, you're all known as heroes of legend. The best of the best, so to get to meet you, it's quite an honor several people in my time would kill to have." Rip said, causing Oliver, Barry and Kara to all exchange smirks with each other at the sound of that.

"What about the rest of us?" Thea asked.

"Well, you're not quite as famous as your brother, but Frostbite, Black Canary, Arsenal, Vibe, Killer Frost, all of you are known as heroes. However, I can't reveal too much of the future to you, since it's dangerous to know too much." Rip said and they all nodded.

"So, what's this all about?" Oliver asked.

"We were facing some sort of ancient Egyptian mystic named Vandal Savage who was hunting Carter and Kendra here. We saved them, but Savage got away and then this Rip guy showed up." Cisco said.

"Yes, because if you want to stop Savage for good, then you'll need my help." Rip said.

"How so?" Laurel asked.

"Because no one knows more about Vandal Savage than I do, since I've been hunting him for years." Rip said.

"Why?" Caitlin asked.

"In the future, Savage rises to power to rule the world and in 2166, he murders my wife and son. Ever since I've become devoted to hunting him down and stopping his rise to power. However, until recently, my plan was opposed by my former bosses, the Time Masters." Rip said.

"What happened?" Oliver asked, since this was new information, even to him, Barry, Kara and Cisco.

"It turns that in the year 2175, Earth is invaded by an alien race known as Thanagarians and the time masters were actually helping Savage consolidate his power to unite the world under a single leader to give it a chance to survive. However, it turns out that Savage was playing them like they played me." Rip said.

"How so?" Kara asked.

"While Savage did do as they asked, he's secretly been putting his own plan into action. A plan to erase time itself. And once he was sure he'd acquired what he needed to do so, he turned on the time masters and all of them but myself out." Rip said.

"So, typical villain doublecross then." Barry said.

"Pretty much. I've been tracking Savage ever since and trying to stop him from implementing his plan and not only save my family, but also time itself." Rip said.

"So why do you need us?" Carter finally asked.

"Because the only way to truly kill Savage is to have either you or Ms. Saunders deal the final blow using an artifact that was present the night of your first death." Rip said.

"Do you know what Savage is planning?" Roy asked.

"Given the evidence I've managed to procure, my best guess is that he's trying to use the same technology that gave him and you two your powers. If he uses the blood taken from all three of you and detonates three of the meteorites containing the thanagarian technology that gave you your powers in three different time periods, it would result in a time quake that would send the earth back to ancient Egypt." Rip said.

"But doing so could also mean his downfall." Barry said, causing everyone to look at him.

"What?" Barry asked.

"Go on Mr. Allen." Rip said.

"Well, correct me if I'm wrong, but wasn't it the meteor's radiation that gave you three your powers?" Barry asked Carter, who nodded.

"Yes." Carter said and now Oliver began to see where Barry was going with this.

"Then it stands to reason that the radiation works both ways. If he's exposed to enough of it, Savage becomes just a normal man who can be killed by normal means." Oliver said.

"Then we'd just need to kill him three times while also stopping the meteors from going off." Kara said.

"We'll need more help to pull that off." Laurel noted, though Rip seemed to like this idea.

"Gideon, set a course for National City, I imagine there are some heroes there who won't mind lending a hand." Rip said.

"Right away Captain." Gideon said as she appeared.

"Cool AI." Cisco said.

"We still have things to do, such as getting Kendra to emerge into her powers and figuring out which time periods Savage is going to do pull this off in." Barry said.

"I can emerge when we get to National City, since even though Carter told me how to do it, until now, I was still skeptical, but I guess I might as well try and believe it." Kendra said.

"Good. Now, let's get ready to save all of history." Barry said with a grin.