Sin [Synthia Schmidt]; Serpent Squad [Cobra; Eel; Viper]; Tony Stark [Iron Man]; S.H.I.E.L.D.; Crossbones [Brock Rumlow]; Black Widow [Natasha Romanova]; Winter Soldier [James Buchanan; Bucky Barnes]; Aleksander Lukin; Red Skull [Johann Schmidt]; A.I.M.; Falcon [Sam Wilson]; Sharon Carter [Agent 13]; Captain America [Steve Rogers] (in flashback)
Sin and her Serpent Squad have liberated Crossbones from a S.H.I.E.L.D. subcarrier and S.H.I.E.L.D.-director Tony Stark wants to know how this is possible. Meanwhile, Black Widow is looking for the Winter Soldier and Sharon Carter and the Falcon are looking for the Red Skull. In Aleksander Lukin's mind, he and Red Skull duke it out. And when Winter Soldier infiltrates Lukin's headquarters, he realizes that Lukin and Red Skull are closer than he could have ever imagined.