An older Max travels from the future (2014 to be exact) to tell Liz that their relationship will imperil his planet and together they devise a plan to change the future: by making present Max fall out of love with Liz.

As their high school graduation approaches, the gang must come to terms with their expectations for the future, while joining together to thwart the FBI when they discover that several members of the group are under surveillance. Meanwhile, Liz begins exhibiting even more alien-like powers, that cause her to see visions of their future - including their deaths.