One that I can think off the top of my head, is Oh God, Book 2.
It’s basically the same story, it practically ignores the people and events in the first one like it never happened, and the ending is practically the same thing. it’s still a fun movie, but compared to Book 3, it’s not needed at all and can easily be skipped. although the ending is still fun. i’m a sucker for normal people accepting abnormal situation things like super powers.