Buster Moon and the cast of Sing celebrate their Thriller performance at Clay Calloway's Halloween party, only to find the host and guests transformed into dancing freaks by a mysterious, multi-colored ooze.
Sing: Thriller
As a theater troupe takes the stage, a sinister substance spreads through the audience, morphing viewers into zombie dancers, eerily echoing the choreographed chaos of Michael Jackson's "Thriller" music video.
