It was all a mess.
The UN headquarters in Vienna were bombed—leading to the death of King T'Chaka and the prime suspect as none other than James Buchanan Barnes, or rather Bucky. A former HYDRA puppet and a super soldier that everyone thought was dead. So, he was tracked down. Taken to a high security facility to hold him till a "journalist" came along, triggering the forgotten Winter Soldier in him.
Luckily, you, Steve, and Sam managed to haul him off to an abandoned warehouse nearby before anyone else could get to him. It was something, really. Not knowing if he would wake up in the same brainwashed state of his again or not.
When Bucky did wake up, it was clear he wasn't in the Winter Soldier mindset anymore. He was still a bit out of it though, Steve and Sam watching him closely as he spoke.
"Did I, uh... Did I hurt anyone?" That was the first thing Bucky asked. But, that wasn't the most important thing as of now because now...
Steve, Sam, and Bucky were fugutives on the run.