In the 90s, teenager Kurt Stephens and his friends are enjoying the beginning of summer break when their world is invaded by the survivors of a parasite outbreak from the future. The time travelling survivors, called switchers, want to stay in Kurt’s time to escape the horror they left behind, but there’s only room for one person in each respective timeline. For the switchers, time travelling means switching bodies with the versions of themselves from the past. When they arrive in Kurt’s time, they announce their invasion with a large-scale attack, causing fear and panic among the masses. In the middle of the chaos, Kurt and his friends, and a few unexpected travel companions, go on a journey of distance and time, figuring out who to trust, what to think of the people they become, and how, if possible, to make it home before it’s too late.