In the midst of election season in New Mexico, political speechwriters Julia Mann and Kevin Vallick begin a romance, unaware they are working for candidates on opposite sides.

A television program is interupted by a news network announcing that three meteors have hit the United States, France and China. At first it seems natural but after interviews by scientists and eyewitness seems to suggest that it is not. Three more meteors are coming and the various Earth governments combine forces to stop them.

In the early 21st century, mankind has colonized the oceans. The United Earth Oceans Organization enlists Captain Nathan Bridger and the submarine seaQuest DSV to keep the peace and explore the last frontier on Earth.