Z.O.E. 2167 Idolo will take place a few years prior to the events of the series Z.O.E Dolores,i, and is centered on the "Deimos Incident," an act of terrorism by the Mars revolutionaries. 
The BAHRAM army pilots Radium and Viola are the best in their class, and have such have been chosen to do spearhead testing on a new type of weapon; Mars hopes this weapon will liberate them from the UNSF's (United Nations Space Force) tyranny. This new technology called the "Orbital Frame," is powered by an extreamly rare and powerful source of energy known as the metatron ore. 
This OVA depicts the Deimos incident, and the story leading up to this incident.

49-year-old James Lynx was an officer (LEV pilot) in the United Nations global army, one day he received notification that his wife -- a Martian scientist -- was killed during a lab experiment. 
Hateful and resentful for letting her go, his children blamed him and cast him aside, depressed and in despair, James quit the military and took up a job as a transporter between Earth and Mars, he had some slight hope of his wife still being alive and to find her he wanted to be out there. After a few years he seemed to have given up all hope and turned to drinking, until one day he receives an orbital frame by the name of "Delorez", sent by his dead wife. Once again he dares to hope and sets off on a wild and wacky adventure to find the truth and to reunite his family. 
(Source: AniDB)

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