When one knight travels to a another world to find his long-lost sister, he is drawn into a conflict deeper than he knows. With three photographs of his sister as his only clues, Rii, a Knight of Se-Dela, travels to Xeeo, a world of science and technology completely unlike his magical and mystical home world of Dela, where he hopes to reunite with his sister after her mysterious disappearance six years ago. It soon turns out that the disappearance of Rii's sister is linked to a vaster conflict between two ancient organizations that stretches back to the dawn of the two worlds themselves. And when Rii finds himself stranded on this world, he must race to find his sister before the mysterious figures who want him dead end his life.

His allies are not always who they seem to be. The law enforcement robot known as J997 travels to the magical and mystical world of Dela after a criminal wanted on his homeworld of Xeeo. His mission is simple: Find the criminal and bring her back to his world to be judged for her crimes. With an entire database in his head that contains information on everything in the two worlds, and an unflappable desire to pursue the criminal, J997 is certain that this job will be quick. But the mission becomes more complicated when J997 is caught between two secret organizations whose conflict goes back to the dawn of the two worlds themselves. J997 must now avoid getting caught in the crossfire if he is going to return home to Xeeo in one piece. Unless the two organizations have anything to say about it.

Persistent doubt is not easily ignored.As the newest agent of the secret organization known as Reunification, Rii firmly believes in the Mission laid out in the organization's goals. He works alongside his formerly long-lost sister, who has changed much since her disappearance six years ago, and dreams about bringing the Mission to completion some day soon.But when Rii stumbles upon the true nature of the organization, he finds himself torn between continuing to serve the Mission and quitting Reunification entirely. The matter is complicated by his loyalty to his sister, who he does not wish to betray, despite his gradually weakening loyalty to the cause.With his conscience and loyalty battling each other in his mind, Rii finds himself faced with a diffcult dilemma, one that, regardless of his choice, will change his life—and the lives of his family—forever.

Breaking the law is sometimes the most lawful thing to do.Having been framed for crimes he did not commit, the robotic law enforcer known as J997 must break even more laws as he attempts to stop the secret organization called Reunification from reuniting the worlds. He and his allies—the surviving members of the organization known as the Foundation—will need the aid of the best agent in the Foundation in order to stop Reunification once and for all.But when it turns out that this agent has been arrested and thrown into the most secure prison in the world, J997 and his allies must break him out of prison before his scheduled execution. If they fail to rescue this agent, then their chances of defeating Reunification and saving the world will become nearly hopeless.

The end is here. In the fifth and final Two Worlds novel, Rii, a heroic knight, and J997, a law enforcement robot, must work separately and together to stop the reunification process that is bringing the two worlds together. At stake are the lives of the billions of innocent people on both worlds, including Rii's siblings and J997's fellow law enforcement officers, who will not survive the forcible reunification of the worlds. But with Reunification's leader and his followers blocking their every step, Rii and J997 must use their strength, cunning, and intelligence to save the two worlds from certain doom. And if they fail, then the consequences will be truly apocalyptic.