Summary:

An incident at the Department of Mysteries sends Harry back through time. He ends up in 1942, alone and determined to get back home. Afraid of causing irrevocable changes to the timeline, he tries to keep a low profile, but staying under the radar isn’t easy when the universe keeps throwing obstacles in his path. There’s a war raging on, the Chamber of Secrets is about to open, House politics are more complicated than he remembers, and he's sorted into Slytherin - the house under Tom Riddle’s control.