our men out on a STAG NIGHT in New York prematurely exit an underground train after the soon-to-be-best-man begins to hassle two women. Trapped at a deserted station these six adults become the target of a gruesome manhunt when a secret gang of cannibal dwellers, living in the tunnels discovers them. Tensions will rise as they fight to make it through the night with all their limbs attached.

Overview from IMDb.com