Pokemon The Movie Genesect and the Legend Awakened

Another movie that I have but haven't watched, I don't remember when I got it, and I don't remember when it came out. The cover feels anachronistic, seeing Genesect and Ash's Unova outfit together with a Mega-evolved Mewtwo. I'm not sure what it's about, maybe I'll watch it someday when I have time. I am definitely intrigued to see how Mewtwo and Genesect interact, both being Pokemon created by humans.