Do Not Pass Go

Return to the start. Do not pass Go. Do not collect 200 dollars. Harry and pals' ultimate spell goes awry, and Voldemort is reverted to a baby, brain and all. Everyone deserves a second chance, and this time, Harry's making sure Voldemort gets it. one shot with a twist, no pairings mentioned but HGRW / RWHG and BWFD / FDBW, teetering on the edge of a crack!fic