Takes place during Avengers Lexi Barton is Clint's little sister. Lexi has secrets her own brother doesn't know, and is determined to not let anyone know. When SHIELD contacts Lexi saying her brother is missing, and working with a world threat, Lexi decides to help the Avengers. Not only to help the world, but to help get her brother. Loki on the other hand has other plans. He has Clint under his control and uses him to get answers, not only was he able to find something that will help him with his plans, he has learned he has a sister, and is intrigued to find out more.