During a cross-universe patrol mission, Zeta and Zero were accidentally involved in the turbulence of time and space and fell into a universe without light.
This place was swallowed up by the "dark flame", and all planets lost their stars.
They discovered that the source of the dark flame actually had some ancient resonance with the plasma sparks of the Kingdom of Light...
The enemy's real goal is to seize the energy of the plasma spark tower and rewrite the laws of all universes.
