Jack Dawn

Monty appears as a chap whose prospective father-in-law, to find out the stuff of which he is made, sets him out to peddle an encyclopedia which no one else can sell.

Nerdy Hobart Moore is kidnapped by three women, and brought to a house occupied by Gertie, a morbidly obese nymphomaniac. Hobart is more interested in making sure his tropical fish are being fed, than in any of the women.

Virginia Dean enjoys a yachting trip with her father. She falls in love with the captain of the boat, John Reynolds. A gang of criminals has stowed away on board and they take over the yacht and set her father and the crew adrift in a small boat. However, they keep John and Virginia on board. When the yacht catches fire, they all abandon ship and take refuge on a nearby tropical island. Blackie Slade, the leader of the villains, rouses the natives to attack the others