Reva, a cheerful student, suddenly changes after her 21st birthday. Reva becomes moody and doesn’t want to hang out. Then at her house, her mother and two younger siblings are killed sadistically. Reva is declared a murderer and is rehabilitated in a mental hospital. Devi, Reva’s best friend, does not believe this and feels there is something about Reva. At the hospital Reva is...。在Zi行星上,流行着一种机兽格斗赛。拥有蓝色头发的少年RD就是机兽格斗者之一。在某次战斗中,出现了机兽合体的战斗。此后RD也开始寻找可以可以和自己驾驶的零式长牙狮合体的机兽。并一心想找到传说中的机兽……。