Abyssal rifts tore apart the city, old civilization collapsed, and the "Divine Skeleton" mecha became the last barrier for mankind.
Chen Mo, a low-level young man, accidentally inherited the legendary mecha [Cang Ting], only to discover that the core of the mecha was actually five "Valkyrie" AIs with different personalities and abilities.
The lonely commander, the blazing flame of freedom, the gentle daughter of nature, the mysterious knower of taboos, the dreamy weaver of reality and reality... He must establish bonds with them beyond the contract in order to control the complete mecha and face the darkness that can swallow the world.
But at the end of this road of redemption, what awaits him is not only the abyss of destruction, but also a shocking secret about the reincarnation of civilization - he and the Valkyries may be the only antidote and key to the end.