The Lost Piece

The Thunderbolts fought their hardest to defeat Sentry, but quickly retreated after realizing his strength. Yelena took the group back to her apartment to develop a plan, a plan that included more than Bucky, Alexei, Ava, John, and her.

Svitlana Romanoff was originally on the Avengers, after being rescued by her sister from Hydra. Tony saw her potential and willingness to fight, so he gave her the tools she needed. A suit just like his, knowledge of technology, and loads of training. Lana was right next to Natasha, Steve, and Sam when they were fighting the Winter Soldier. She helped motivate Steve to get back his best friend. But, once Bucky was rescued, Lana and him became more than just teammates.

The battle of Thanos destroyed Lana's life, taking everything she knew. After Tony's funeral, she left everything behind and cut the remainder of her friends off.

Yelena knew Lana was their last option, a mastermind that combined most of the Avengers personal strengths. She just had to convince her sister to come out of hiding and help the team.

Thought not talking to her sister for over a year, and knowing she has bad blood with Bucky and Alexei, Yelena isn't sure how she will convince Lana to help.

*****

Story flashes between past tense of the old Avengers and current state of the Thunderbolts.

The battle with Sentry will be altered compared to the movie, and some timelines will be slightly off.