Agents Sam and Billy Koenig are hunted down to get at the Darkhold book, and only Phil Coulson and the team can save them before the clock ticks out.

Coulson and the team discover that the most unexpected person from S.H.I.E.L.D.’s past may hold the key to stopping Earth’s destruction.

As Fitz and Simmons race to find a way to seal the Rift, they are faced with one of their greatest fears manifested.

With time running short, the team will have to go to hell and back to stop the end of everything.

A surprise leap forward in time has stranded Enoch in 1931 and landed the team in yet another unfamiliar decade. Now, in order to stop the Chronicoms from launching their newest future-dismantling plan, the agents will have to infiltrate one of S.H.I.E.L.D.’s most secure bases. They won’t be able to succeed without help from a familiar face or two.