When they need to get a Repulsar Generator to get through a gravity storm, the Guardians of the Galaxy cut a deal with the Collector on Knowhere. In exchange for the Repulsar Generator, the Guardians of the Galaxy must deliver a herd of Moombas to Conjunction in two days. Drax is cautious around the Moombas. The Collector even warns them to feed them nothing but grass as anything else can make them explode. The Guardians of the Galaxy take the Moombas away from the Nova Corps. They are soon targeted by the Ravagers who have been hired by the Grandmaster to take the explosive Moombas back to the Collector.