Simon was clearly out of his place here, the River of Destiny wasn't something he should come in contact with at his current level.
He turned around no longer looking at the river and moved towards the area from where he came in. However, the broken space had already mended itself and there was no longer an exit he could take to go back.
Just as he was about to ask the second fragment how to get out of here, from the corner of his eyes, he spotted a figure that was similarly floating around the River of Destiny just like him.
Needless to say, the other party was Godwin. Earlier, when the golden light burst out of the latter's body, both of them were pulled inside this unknown domain. The fact that he was dragged here, was their doing.