It is the year 2160. Mankind has colonized the solar system and two political entities have emerged: the Alliance consisting of American, Australian, French, Spanish, Italian, Japanese, British and German forces, and The Coalition of Russian, Chinese and Middle-Eastern interests. The game begins with a surprise attack on Fort Kennedy, where a peace treaty turns into a bloodbath: all of the inner four planets are overrun, including Terra herself, and the Italian and French fleets are utterly lost. The Alliance fleet regroups at Triton, Neptune's moon, and attempts to regain lost territory. The player takes the role of a rookie pilot in the international 45th Volunteers squadron, under the command of Captain Robert Foster and Wing Commander Maria Enriquez, aboard the re-commissioned British carrier ANS Reliant.