“Who You Really Are” is episode twelve of season two of Marvel’s Agents of S.H.I.E.L.D.
Lady Sif appears on a beach in Portugal. She has no idea who she is, as she has lost much of her memory. Coulson and the team go to investigate; although she doesn’t remember ‘Son of Coul’ he does have pictures of them both together, which helps matters.
Sif had been in a fight with another alien being, one who is blue in is natural appearance. I had thought he might be a Jotun, but he’s actually a Kree. He had detected the use of the Diviner that had transformed Skye and Raina.
Bobbi and Mack are plotting against the others, although they aren’t HYDRA. What they are plotting isn’t revealed yet, nor is why they are plotting.
Fitz had hidden the changes that the artefact had made in Skye in the previous episode, “Aftershocks”, but that’s coming out in this episode, as well as what the Kree city and the Diviners were for.