Plot summary
S.H.I.E.L.D. is called in to help an amnesiac Sif, who was last seen fighting an incredibly strong man and is searching for something called "Kava", which they soon discover is the location where Whitehall found the Diviner. There, they capture the man, who restores Sif's memories and introduces himself as a Kree named Vin-Tak who has come to destroy all the Diviners and kill anyone affected by the Terrigen crystals inside. When Skye's abilities are revealed, Sif and Vin-Tak attempt to capture and kill her, respectively, but Morse wipes Vin-Tak's memories using his own weapon, while Coulson convinces Sif to leave Skye be.
Sif returns Vin-Tak to his planet, warning Coulson that, while the Kree should no longer be a problem, Skye may be a greater danger than he realizes. Meanwhile, Morse tries to end her rekindled relationship with Hunter when Mack warns her that he is getting too close, but Hunter angrily confronts Mack about this and his suspicions that Mack and Morse are hiding something, forcing Mack to knock him unconscious.
Credits
Adapted from Wikipedia contributors, Agents of S.H.I.E.L.D. season 2. HTML formatting and reference markers removed.