A prehistoric cavegirl named Tahra (Jezebelle Bond) with a penchant for passion finds pleasure in the company of archeologists when she is accidentally transported to the future. There she encounters two archaeologists named Richard (Alexandre Boisvert) and Sharon (Kennedy Johnston). After several adventures, many of them sexual, Tahra's lover Tiko (Evan Stone) also finds his way to the future. Eventually, all of them are transported back to the time of Tahra.

While scuba diving, Jill's boyfriend Dustin finds a doubloon necklace and the diary of Morganna, a pirate who sailed the coast 200 years ago. With the diary is a treasure map that takes them and their friends Susan and Joe to a mountain cabin. Before setting out in search of the treasure, the four hold a séance using instructions they find in the diary. It brings Morganna and her mate, Captain Tygus, back to life. It's a race for the treasure. Morganna and Tygus will stop at nothing. What about the necklace?