Plot summary
Now in charge of Coulson's base, May agrees to look into his actions since he became Director, finding that Coulson has been secretly building another base and consulting with Garner, which Mack believes is because he is creating a gifted army. Skye is training with Jiaying and begins to focus her abilities to manipulate objects' natural frequencies. Jiaying soon reveals that she is Skye's mother—Cal had pieced her back together, her healing factor revived her, and they searched for Skye, who S.H.I.E.L.D. had taken.
Once Jiaying realized what monsters they had become, she left Cal to build a new and peaceful life. Their relationship must remain a secret because a member of their group once stole Terrigen crystals for her daughter, who then forced her mother to hurt others to feed on their pain. They were stopped when May killed them both, scarring her for life. However, Jiaying and Skye do agree to join Cal for dinner, a moment that Raina apparently foresaw in a dream. Fitz opens the toolbox and uses it to contact Coulson.
Credits
Adapted from Wikipedia contributors, Agents of S.H.I.E.L.D. season 2. HTML formatting and reference markers removed.