Hank Green, an employee of local scientist Dr. Gavin, attends the beach party with Tina, his immature and drunk girlfriend. While dancing, Tina flirts with Mike, the leader of a motorcycle gang, as Hank talks with Dr. Gavin's adult daughter Elaine. Following a scuffle, Hank and Mike shake hands and ignore Tina, who swims to a rock jetty. Shortly after arriving at the jetty, and as The Del-Aires perform "The Zombie Stomp," Tina is attacked and killed by the monster. Tina's body soon thereafter causes a commotion when it washes ashore, still covered in blood.