In the not-too-distant future, Britain is an anarchic state where a pandemic has wiped out the younger generation. The only salvation is a vaccine called Parousia. However, its rations are controlled by the government who have decreed a one vaccine per family policy, unless you have the means to buy more.

Mia, a bereaved mother, leads a rebellion against the ruling forces and sets off on a heist to take back the vaccines for those in need. However, the mission is sabotaged by a series of events that take Mia and her troop by surprise. If Mia is to succeed on the battlefield, she must overcome the battle within herself.