The Mad Titan Thanos and his Black Order—Corvus Glaive, Proxima Midnight, Ebony Maw, Cull Obsidian, and Supergiant—attempt to collect the six Infinity Stones in order to achieve galactic conquest. Originally guarded by Nebula and Ronan the Accuser, the Guardians of the Galaxy stumble upon their attempt to hide them from the group and end up accidentally alerting the Order to their presence. In desperation, Star-Lord uses the Space Stone to scatter the other stones on Earth, and to get him and his team to safety. As S.H.I.E.L.D. detects their presence, Nick Fury Jr. unites the Guardians and Earth's heroes to find them.