Dangerous secrets are being kept from Coulson's Team, and he works the system to save Ward and Fitz when they are sent on a Level 8 classified mission that may end in tragedy.

Hot on the trail of The Clairvoyant, Coulson and his team board a mystery train that seems to be headed for certain death.

The world turns against S.H.I.E.L.D. when HYDRA impersonates them to attack The United Nations, and an unexpected enemy leads the charge to bring about their downfall.

War comes to Coulson's doorstep in a way he never anticipated as shocking revelations are brought to light, and Skye struggles to control her new abilities but will soon make a decision that irrevocably changes her life.

Skye is torn between her loyalty to S.H.I.E.L.D. and her connection to the Inhumans as tensions rise between the groups -- and Coulson reveals a secret he's been hiding from even those closest to him.