Where To Stream Johnny and the Bomb Season 1 Episode 3

Johnny and his friends make a final trip back, retracing their steps to try and put things right. Paradise Street is doomed, along with Johnny's teenage grandparents unless they can re-write history and divert a whole squadron of German bombers. Can they make it in time or will Wobbler stay in World War 2 while Johnny won't even exist, at least not in this life?