When a midnight scavenger hunt for a rare bud of weed brings a group of party-hungry stoners to a haunted hotel, they open a portal and unleash a group of ghastly hysterical creatures that has only one mission: party ‘till you die.

Mel moves in with the eccentric Keely whose obsession with a dead boy causes her to question her new living situation...until that same dead boy appears to enlist her help in breaking Keely's obsession in the hope he can move on.