The Escape from the Kyln was a prison break organised by the combined forces of Star-Lord, Rocket Raccoon, Groot, Gamora, and Drax.
Gamora informed the others that the Collector was her employer, not Ronan the Accuser, and the four agreed to split the payment for the Orb if they could escape. Drax the Destroyer, an inmate, wanted revenge on Ronan for the death of his family.
Since Gamora was a known associate of Ronan, Drax attempted to kill her; however, Star-Lord convinced him that Ronan would come for her and that keeping her alive was a better option.
Rocket Raccoon discussed with Star-Lord, Gamora, and Groot a plan to escape their imprisonment. He told each person what he needed and they tasked themselves to get it. Gamora was to get a guard's arm band and Quill said he would procure a fellow inmate's prosthetic leg. While Rocket was discussing the prison's power source, Groot, without warning, extended himself and pulled it out as Drax watched.