
To his mother's dismay Lionel falls in Love with a local shopkeeper's daughter Paquita and while snooping on the two during a visit to the zoo Vera is bitten by the Sumatran Rat-Monkey she subsequently crushes its head The animal's bite slowly turns her into a ravenous zombie Lionel if horrified but ever the dedicated son is determined to care for her. Wellington 1957 Lionel Cosgrove lives with his domineering mother, Vera. A bite mark is then seen on his left arm which swiftly results in the removal of that limb Finally they see a set of bloody scratches on Stewart's forehead and kill him The title´screen follows the man's dying scream and as the opening credits roll the captured rat-monkey is shipped to Wellington Zoo in New Zealand. As the jeep takes off Stewart's guide catches up and jumps on board In the ensuing melee Stewart gets bitten by the Rat-Monkey Seeing the mark of the monkey's bite right hand Stewart's men immediately hold down the infected explorer and amputate the appendage. Stewart an explorer returning from the depths of the Island with his guide and team is carrying a rat-monkey in a cage and is stopped by fierce warrior natives that demand the return of the monkey Stewart escapes with the cage to the rest of his team and a waiting Jeep leaving his guide behind and the natives in hot pursuit.

The first scene sets up danger of the "Sumatran Rat-Monkey" a hybrid creature that according to legend resulted from the rape of tree monkeys on Skull Island by plague-carrying rats.
