A possible summary is:
Peter Parker, aka Spider-Man, faces a tragic situation when his aunt May is shot by a hitman hired by Wilson Fisk, aka Kingpin. He seeks revenge and justice, but also tries to save his aunt's life with the help of science, magic and a deal with the demon Mephisto. The deal costs him his marriage with Mary Jane and their unborn child, as well as his memories of ever meeting her. He starts a new life with his aunt alive, but without his true love.
Here are the key facts extracted from the text:
- 1. Peter Parker's aunt May was shot by a hitman hired by Wilson Fisk.
- 2. Peter Parker sought revenge against Fisk and the hitman, breaking his moral code as Spider-Man.
- 3. Peter Parker asked Tony Stark, Doctor Strange and Mephisto for help to save his aunt, but none of them could offer a solution.
- 4. Mephisto offered to save aunt May in exchange for erasing Peter and Mary Jane's marriage from existence.
- 5. Peter and Mary Jane agreed to the deal, sacrificing their love for aunt May's life.
- 6. Peter Parker woke up in a new reality where he never married Mary Jane and had a different life.