A/n

Isabella Stark is Tony Starks twin sister and they don't have the best relationship.They don't talk at all. She is 30 and works at shield and when Nick Fury tells her she is joining the Avenger she is not happy.She's best friends with Clint Natasha.Her and Nick are practically family.

Swearing and Violence
Mention of drinking, Smoking and drugs
Only characters i own are Isabella Stark and some Villains that aren't in the movies.

By the way this is my first story so sorry if it's not good.