In the 23rd Century a starship named the Floran leaves Earth to seed a colony on an Earth-like planet found orbiting a nearby star only a handful of lightyears distant. During the voyage a warp drive malfunction sent them off course in space and time. They were thrown 5,000 years into the past and hundreds of lightyears distant.
They succeeded in founding a colony, just not on the intended planet. In 5,000 years this colony grows into a interstellar empire. However the inhabitants of this empire require contact with Earth for plant genes to keep their food production healthy. They send specially trained agents covertly to Earth to gather this material.
The series centers on Nykkyo Kyhana, such an agent sent in the final days of the 20th century for a 1 year stint. His assignment becomes complicated after he encounters and falls in love with a troubled and emotionally fragile Earth woman he discovers is a distant ancestor.
Nykkyo Kyhana is an ordinary guy: He has a boss, a job that's a grind, a wife who doesn't understand him and a high-maintenance girlfriend on the side. He just happens to hail from another planet -- one 200 lightyears from Earth and with a history that's inextricably entwined with Earth's future. He is sent to Earth to gather plants for his homeworld's agriculture. That mission becomes far from mundane when he meets a woman and realizes his civilization's survival may hinge on her fate.
2nd novel in The Earthbound Series: Nykkyo adjusts to life on his adopted world and living with Sukiko. Meanwhile, authorities on his homeworld begin to question the actions of his friend Andra. They believe she is aiding Lexal, a rogue colony, prepare an invasion force. Nyk is asked to travel to Lexal and bring Andra to justice. Arriving on Lexal Nyk discovers things are not as they seem, and he finds himself in the midst of a civil war. He and Andra must run for their lives. [17 chapters]
Volume III of the Earthbound Series: Nykkyo proposes to Sukiko and she accepts. Meanwhile, Nyk's vindictive ex-wife Senta informs homeworld authorities of his involvement with an Earth woman -- something expressly forbidden. Nyk is confined to his planet and forbidden contact with Suki. He searches family records from the founding days of his world and finds a document that could clear his name. However, the same document reveals impending tragedy. [20 chapters]
Volume IV of the Earthbound Series: Nykkyo is now a widower living with Sukiko's mom and son, and carrying an incredible secret about her death. As New York recovers from the 9/11 attack, an outbreak of a fatal virus on Earth occurs, killing one of his Floran agents. While investigating possible off-world origins of the virus, Nyk and his new protege Dyppa travel to her homeworld where he learns his world's idyllic standard of living is far from the norm across Floran's colonies. [18 chapters]