"So you're telling me you've come from the future to warn us about the war so we get a better outcome!" Harry said in one breath. "Um.. Yeah.. Kind of.. It's complicated." On Lily Luna Potter's third birthday the Weasley-Potter kids get a one of a kind chance to send a letter to their parents past selves to hopefully change the future for the better. They are sent to a weird room with lots of buttons. But when one James Sirius Potter messes with with a big red button they are transported back to their parents third year and they learn that they must now change the future themselves.