"In an age yet to come, humanity is forced to live on small patches of earth and artificial islands that resist the tide.
These remaining vestiges are supported by the remnants of an advanced technology from a bygone era -
Relics.

Hidden within perilous underground facilities, now referred to as 'Vaults,' brave pioneers known as 'Hunters' venture to recover these Relics for the betterment of all.
Though some, driven by their insatiable lust for wealth and power, steal from those who emerge from the depths.

However, there is one Vault that no one has ever been able to enter:
The Monolith on Mech Island -
a mystery that has made its way into the minds of all.

Many believe it to be a panacea for the world's woes,
the catalyst that will thrust mankind into the future,
sparking hope and fear alike.
But none know its true purpose.

Who can say whether it will bring about good or evil?"