A seedy downtown bar on a quiet Sunday morning becomes a battleground for Armageddon, when a batch of bad booze contaminates the alcohol supply of the local drunks Carrying a mutated worm, the tainted tequila infects all who drink it, swiftly turning them into ravenous shots for brain eating worms Luckily, an intrepid group of drunks, losers and lost souls is on hand to save the day