It's the day after Halloween in 1988 when four young friends accidentally stumble into an intergalactic battle and find themselves inexplicably transported to the year 2019. When they come face-to-face with their adult selves, each girl discovers her own strengths as together they try to find a way back to the past while saving the world of the future.

Follows the stories of the four men of the Kirby family. As Alex's marriage breaks apart, Toby tries desperately to start a family, and Marty tries to kick-start his faded music career as well as find a meaningful relationship with someone his own age, all three must come to terms with their father's mental state. Cliff, suffering from Alzheimer's disease, is reliving his disturbing memories of the war and his first love, as a part of his experiences of the present . Through all four stories, we uncover a families troubled past, and their struggle towards a reconciled future.