Fifteen years have passed since the hyper gate linking the moon to Mars collapsed - a catastrophe known as "The Heaven's Fall". The war between Earth and the VERS Empire of Mars is now in a cease-fire. The VERS's Princess Asseylum Vers Allusia descends upon Earth as an ambassador hoping to encourage reconciliation, but some citizens are not willing to compromise. Inaho Kaizuka, a Terran high school student...and Slaine Troyard, who swears his allegiance to Princess Asylum...Their fates cross as both societies watch in horror as a missile crashes on Asseylum's motorcade. This incident marks the beginning of a new war.