Natural disasters have devastated planet Zi, killing off almost all life. A thousand years later humans have gradually re-established civilization, salvaging ancient Zoids through diving and mining efforts. In a village whose most previous item is a giant sword which they worship as a holy symbol. A teenage boy discovers an ancient Liger-type Zoid while on a deep water salvage operation. Suddenly the village is attacked by skeletal Bio-Zoids intent on stealing a powerful generator located in the village. Our teenage hero awakens the Liger and discovers that the town`s sacred sword is the Liger`s weapon, together they fight off the mysterious Bio-Zoids. At least for now... (Source: AniDB)

Two hundred years ago, on the Battlefield of the Blue River, the last remaining army of the Empire of Light collapsed in the midst of demonic outcries. As the last Field Marshal and Emperor fell, the chaotic world of the Western River no longer had a common ruler. Factions were formed and endless conflicts ensued, military might became the only currency of survival, and the dream to reunite the lands became the sole goal of many rulers in the generations that came after. In the south-eastern part of the land, a powerful faction with over two hundred years of history – House Zichuan – fought off the Demons to the east, defended against the House Liufeng to the west, and contained the House Lin to the south. In order to accomplish their great ambitions and extend the bloodline of their family, countless heroes of Zichuan gave their lives in order to make this magnificent hymn come to life. This is a story about this legendary family and a hundred years of their blood and tears. (Source: AniList)

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 Dolores, 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)

Z.O.E. 2167 Idolo takes 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 extremely rare and powerful source of energy known as the Metatron ore.