After Sylvanas escaped Varian's guards, she recalls her past and Sylvos in it. Please remember - it's still my alternative version and all the elements with Sylvos are my pure invention, so don't treat it as the official version of the Warcraft Lore.
Again, all the characters were played by real players with the use of morphs, no additional animation was used.
Part 1 of the story:
30 Seconds to Mars: R-Evolve (just couldn't resist the lyrics and their multiple meanings in the context of the film)