The novel’s protagonist goes by the name Hiroyaki Kuze. Serving in the Ground JDSF, he faces an assignment to the fleet as part of reinforcements to a special mission of the UN. However, their mission was abruptly interrupted when a winged lady teleports the entire fleet to a different world, where swords and magic reign supreme. Kuze was sent out to scout the surroundings. His platoon landed at the capital of the United Kingdom of this new strange world. He attempted to leave but was stopped by an attack on the city. Now the Empire believes the fleet is a reinforcement for the United Kingdom. The power of the JDSF is going to come in really handy both on land and on the sea!