The boys enter their 2nd year and someone from South Park joins them as a student.
After the Dursleys move to South Park Colorado when Harry is nine. He meets Kyle, Kenny, Stan, and Cartman. I'm not good at summaries and it's set during season 14 of SP and pre-SS. Adult canon pairings only. Rated T to be safe
During the Go God Go two part er, instead of waking in 2526, Eric Cartman finds himself 1000 years in the future and in New New York city.
The prequel to Harry Potter: Year 2 in which the boys are in 1st year.