The world of Magic had been destroyed by muggles. Wizards and Witches become extinct because they're being hunted and killed. Harry Potter had cursed them to suffer their consequences.
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"You!...You stupid human because of you and Tom thousands of people died and my paperwork are piling up!"
"Thankfully Life had agree my decision of pairing you two as soul mate and sending you off to another world to save you and Tom's soul."
"Be grateful I didn't make your soul disappear and won't reincarnate for the next life. Now chop chop, meet your beloved darling and have fun, by the way meet Grim Reaper it will be your guide just think of it as system."
"Oi, I didn't agree to this!"
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Harry had mission to finish and that is to fix every world he reside in. His mission is to save the magical world from being eradicate by muggles but with the annoying midget hovering you and a sadistic egoistical human creature named, Tom - FCKING - Marvolo - SHTTY - Riddle, A.K.A Voldemort chasing him every world he's in.