Matt Daniels thinks ordering a can of Monster Blood from a weird website will be just a harmless prank. But when the gooey green slime starts acting up — messing with reality, going where it shouldn’t, even getting into his food — things quickly spiral out of control. Just when he thinks that’s as far as it goes, an invitation arrives: a trip to HorrorLand, a scream-park where horrors lurk behind every turnstile. As his friends begin to disappear one by one in the park, Matt must figure out what’s behind the chaos, survive the twists, and somehow deal with the monstrous consequences of his prank