SECRET EMPIRE TIE-IN! The Chitauri invasion has arrived, and Captain Marvel and Earth's heroes are outnumbered. Now it's up to the Guardians of the Galaxy to find reinforcements! There may be a weapon that could turn the tide of the battle, but in order to obtain it, the Guardians will have to rely on the help of the last alien Star-Lord ever wanted to see again...Yondu Udonta!