Nate Connor is an ongoing story, which covers many remarkable events in teenaged Nate Connor's life. In each book, Nate finds himself in extraordinary parts of the world interacting with the unique people and cultures there. Every location and every situation yields tough challenges for Nate as he uses his wit and good sense to solve mysteries.

In the book, Nate Connor - The Secrets of Nakagusuku Castle, Nate departs with his family for the island of Okinawa, Japan. It takes a while for Nate and his younger brother, Ricky, to adapt to this foreign place. Ultimately, they meet Toshiko, a girl who grew up understanding the Ryukyuan culture. Together, they set off for a bicycle trip to the ruins of Nakagusuku Castle, only to be followed by a villainous gang of Stealy Boys. Adding to the threat of this hot pursuit, the group encounters a series of shady activities surrounding the castle, most notably an evil zoo, where exotic animals are mistreated in horrendous confinement. Find out if Nate and his friends can boldly rely on God for strength and bravery through the jungle, tropical storm, venomous creatures, and finally the mysterious Nakagusuku Castle.