The origin is in the opening credits. It Peter Parker in high school has many characters are there with him such as Flash Thompson, Mary Jane Watson and Harry Osborn who is his best friend. He going out with Gwen Stacy. There a brief cameo of Jessica Jones and Norman Osborn. He works at the Daily Bugle, his boss is J. Jonah Jameson. The main villain is Kraven the Hunter. This is part of the Marvel Cinematic Universe (MHM15).