Plot summary
Skye is rushed to a S.H.I.E.L.D. medical facility, but the doctors are only able to stabilize her. Agents John Garrett and Antoine Triplett arrive to take Quinn for questioning, but Coulson refuses to turn him over. Garrett decides to interrogate Quinn on the Bus, learning that the Clairvoyant ordered Quinn to shoot Skye so they could learn about Coulson's resurrection. Fitz and Simmons, after looking over Coulson's files, realize that Coulson was revived at a place known as the " Guest House ", where Coulson, Ward, Garrett, and Fitz head for answers.
Fitz finds the needed drug while Coulson discovers a room marked "T.A.H.I.T.I." and the source of the drug, the upper half of a blue-skinned humanoid corpse. Everyone escapes the facility, as it was rigged to explode, and, despite Coulson attempting to stop it based on what he saw in the T.A.H.I.T.I. room, Fitz gets the drug to Simmons in time to successfully save Skye.
Credits
Adapted from Wikipedia contributors, Agents of S.H.I.E.L.D. season 1. HTML formatting and reference markers removed.