Four teenagers embark on an adventure in the woods, only to discover the wreckage of a mysterious aircraft and an ominous black box recording that shakes them to their core.
Gabe and Riley find themselves stuck in 1980. Desperate for a way home, they attempt to send a message to the present day and encounter some unexpectedly familiar faces.
After discovering that Gabe and Riley have traveled back in time, Logan, Charles, and Talia hatch a plot to kidnap Alvin and break into Chronos. But not everything goes according to plan.
Logan and Charles embark on a mission to rescue Gabe and Riley, who have fallen into deeper trouble in 1980. The General interrogates Talia and makes a decision that throws Alvin over the edge.
Alvin unleashes Chaos just as Logan and Charles try to break into Chronos. With time running out in 1980, Gabe and Riley enlist help from an unlikely source.