Hibiki Kanzaki is a reporter for a news company, however this changes when a mysterious alien invasion appears.

Hibiki tries to teach Ishtar about human culture and society.

Ishtar and Hibiki try to figure out where Ishtar came from.

Hibiki is kidnapped and tortured by the mysterious alien force. Ishtar undergoes a purification processes, in the holy shrine of Alus Nova.

Hibiki is sent to prison for revealing the secret truth about the Marduck invasion.

Ishtar comes back to planet Earth and tries to find out the secret hidden truth to Alus.