The story of the game revolves around the battle in a research facility in the Pacific Ocean. The facility belongs to the scientist, however, there is an unknown organization attacked the island. And now, the fight between scientist and the intruders is begun. In the role of the last survival scientist, players have to fight with the intruders. Fortunately, there is an unknown soldier to help them and rescue them from the battle. However, the facility is continuously attacked by the same unknown organization. And the battle still isn't to end.

There are lots of battle in this game and they take place in different maps. For example, the battles take place in Facility, Village, Village (Night), Caverns, Caverns (Dusk), Foundry, Foundry (Night), Hijack, Hijack (Dawn), Dormant Train, and Speeding Train. Each map has its own scene and challenge.

There are various maps in this game

Campaign: a mode for beginners. This mode has 15 different stages.

Challenges: a harder mode, also has 15 different stages.

Quick Match: pit yourself against other players or computers in a variety of different game modes

Each stage on the 2 first modes have different terrains and objectives to complete the level.