The following contains spoilers for Dream Productions, now streaming on Disney+Dream Productions being a prequel to Inside Out 2 adds a tragic layer to that animated film. Inside Out 2 reintroduces audiences to Riley a few years after the events of Inside Out. On the cusp of high school, Riley is thrown for an additional loop at hockey camp when she discovers her two best friends Grace and Bree are actually set to go to another high school. This sets off an internal conflict within Riley’s emotions, which leads to the primary plot and emotional ending of Inside Out 2.

https://screenrant.com/dream-productions-inside-out-best-friends-op-ed/