The Avengers, having exposed Skrull infiltrators in the Shi’ar court, pleaded for Starforce’s lives and attempted to convince Lilandra not to deploy the Nega Bomb, a weapon of mass destruction against the Kree.
Starforce then headed out on a mission to assassinate Lilandra, the Shi’ar empress.
While they are there, the Shi’ar assassin Deathbird carried out the assassinations and Starforce arrests the Avengers.
Little did they know though that another group of Avengers was there and they, along with the Shi’ar Imperial Guard, defeated Starforce.