Rui Kai led Pororo and the others, frantically sprinting forward.
Behind them was a sky-darkening, rolling black smoke, within which a massive skull formed out of smoke roared at them.
Seeing the speed at which the smoke was surging forward, and after a slight calculation of their running speed, it was clear that it wouldn't take long before they were engulfed by the smoke.
There was no way to outrun it. Facing the current situation, Rui Kai frowned deeply, then threw his Iron Hammer onto the water's surface ahead.
A large amount of machinery and steel flew out from his ring, surrounding the Iron Hammer he had tossed onto the water, and started frantically constructing.
In just a few seconds, a steel speedboat was constructed on the water, with the hammerhead of the Iron Hammer forming the speedboat's rear.
"Get on the boat! Quickly!"
Rui Kai shouted, jumping directly onto the boat, followed closely by the other three.
