It a team of S.H.I.E.L.D agents doing missions that no single agent could do themselves but to small for the Avengers. The team is Mockingbird, Agent 13, Phil Coulson, Eric O' Grady, Spider-Woman and Deathlok. They take down smaller villains like the Leader, Blizzard, Scorch and Absorbing Man. There are some appearances of Hawkeye, Black Widow, Nick Fury, Maria Hill and Jasper Sitwell. After Captain America 2: The Winter Soldier (2015) they start tracking town Hydra agents who were in S.H.I.E.L.D. This is part of the Marvel Cinematic Universe (MHM15).