Ending

"Now remember. You have to return the stones to the exact moment you got them.Or you're gonna open up a bunch of nasty alternate realities." Bruce explained.

Steve nodded before closing the briefcase.

"Don't worry Bruce. Clip all the branches." Steve told him.

"You know, I tried. When I had the gauntlet, the stones, I really tried to bring her back." He looked at Steve. "I miss her, man."

"We all do." Ash sadly nodded.

"You know, if you want, I can come with you." Sam offered to accompany Steve into the past.

"You're a good man, Sam. This one's on me, though." Steve turned his offer down.

Steve walks over to Bucky.

"Don't do anything stupid till I get back." Steve joked.

"How can I? You're taking all the stupid with you." Bucky smirked at him.

The two hug each other.

"Gonna miss you, Buddy."

"It's gonna be okay, Buck." Steve assured him.

He climbed onto the platform, where Mjolnir was already standing. He activated the Time-Space GPS. Then, his white combination of the Quantum Realm came to cover his whole body.

"How long is this gonna take?" Sam asked Professor Hulk.

"For him? As long as he needs." Bruce explained. "For us? Five seconds."

Cap raised Mjolnir and kept the Stones case with him.

"Ready, Cap?" Bruce said, adjusting the gate controls.

Bruce started the countdown:

"Going Quantum. 3… 2… 1…"

Then Steve Rogers disappeared from the Quantum Realm portal, taking with him the briefcase and Mjolnir.

Then, Bruce continued the countdown:

"And returning in 5, 4, 3, 2, 1... "

Everyone waited a moment. But nothing happened. Cap didn't reappear, much to everyone's surprise.

"Where is he?" Sam asked.

"I don't know. He blew right by his time stamp." Bruce exclaimed while looking at the controls of the portal. "He should be here."

"Well, get him back!" Sam shouted

"I'm trying." Bruce replied.

"Get him the hell back!"

"Hey, I said, I'm trying!"

"Sam." Bucky said, going a little further ahead.

Superman happened to be passing through the area and looked towards their direction.

"He's right over there." The Man of Steel pointed to a bench in front of the lake.

The two people joined the Winter Soldier, and saw in the distance an old man, with his back turned, sitting on a bench in front of a large lake. Next to him was a large oval pouch.

Bucky motioned Sam to join him.

"Cap?" Sam asked.

"Hi, Sam." A older Steve greeted him.