Re=edit As a zombie virus infects friends and family two small town stoners discover they are immune. Using their girlfriends as bait they save the community by luring the town to the school gym and getting them high.

You shouldn't give away the ending in a logline.
Inciting incident: Jamaican virus/immunity
Lead character: a stoner
Goal: Round up the town and save them before they are killed.

"When he discovers he's immune to the Jamaican?zombie virus, the town stoner and his friends have one night to round up the townsfolk and get them high or they will remain zombies forever."