Moments after an unjust firing, Derek Cho finds himself unable to leave his old office. A quarantine will do that to you. Mayhem is a joint effort from director Joe Lynch and writer Matias Caruso. This is hyperviolence at its finest, a marathon bloodbath punctuated with quips, physical comedy, and some beautifully delivered narration from star Steven Yeun. The whole thing is an undeniably fun ride, one that knows exactly what it is and leans into it. The result is a tight 91-minute story with minimal frills. Derek is fired, shouldn’t have been, and is ready to literally fight to the top of an id-into-overdrive virus infected law firm so he can plead his case to the board. It’s paradoxically lighthearted given all the bloodshed and anger, but somehow it works and never overstays its welcome.