In this movie, Rika sings. Surprisingly, that's not the reason this one isn't canon.
In this episode, the good news is that the weird nihilistic Jeri is actually the first agent in disguise. The bad news is that only D-Reaper knows where the real nihilistic Jeri is.
In this episode, the kids deal with a possessed bike in the middle of nowhere. Meanwhile, in a completely unrelated and unimportant subplot, Impmon sells his soul to the devil.
In this episode, Rika weathers a wind storm with a kooky married couple. Oh, and Jijimon and Babamon too.