How about a Friend?

After Civil War, the Avengers split apart.
Natasha Romanoff goes to break Wanda Maximoff out of the Raft, Ross' cruel prison in the middle of the sea.
Five days later, Steve Rogers, Captain America, breaks everyone else out.
But something's not right.
And they can't solve it by themselves, but n either party wants to encounter the other.
But what happens when they do?
One word: complications.

Note: I am thinking of making a later part of this what happens during/after Endgame, with few changes of my own.