Luna, Ginny, and Hermione are shot back in time only to discover that the past and future they know has been rewritten. Stuck in 1975 as fifth-year students at Hogwarts, they now face a new life in the time of the Marauders. But will the steps they take to stop Voldemort and save the wizarding world destroy their chances of returning to their lives in the future? HG/SB GW/RL LL/OC