Nancy Drew: The Creature of Kapu Cave – an adventure quest included in the franchise about a girl detective. This part is one of the many games about Nancy Drew, which was originally invented as a character in the book. Episode 15 of this multi-part story focuses on the detective's journey to the Hawaiian Islands to work as an assistant to a famous entomologist named Quigley Kim. She studies different species of animals, and at the start of the single-player campaign she was studying Norsobeta Odorato caterpillars, which began to breed much faster than usual.

In addition to the heroine and the entomologist, characters important to the storyline are Mike and Pua Malu, as well as Malcolm Craven. In addition to them, there will be other personalities who will also play their role in a well-developed detective plot with a lot of secrets and unexpected twists. Much of the gameplay consists of solving puzzles, which requires you to carefully examine all the locations on the island to find important items that help you move forward.

A separate storyline develops in the investigation conducted by the brothers Frank and Joe Hardy. These are characters from the original stories who appeared in Hawaii to spy on the family business that owns the Big Mike Center. During the story, their activities will intersect with Nancy's; to switch between the three protagonists you need to use mobile phones.