It's been several months since the alien lifeforms, the Ravagers, attacked us again.

The Earth Defense Force (EDF) have been developing a new type of aviation unit for Wing Divers.
The main focus of the new aviation units was to allow for much greater flight times, and to give the Wing Divers the ability to Emergency Reload without having to land back on the ground.

The unit was undergoing testing by Pale Team, and was just entering its final stages when the incident occured.

The majority of the EDF's forces were converging in one area to prepare for their mission to attack the enemy mothership.
But, as if they could see right through the EDF's plans, a massive surge of giant insects appeared.
The EDF's only option was to send the few soldiers they had left defending their H.Q. to defeat the new threat.