Riya Cross is sent on an expedition to explore Aethra, a mysterious island which was once a beacon of ancient technology before being lost to the depths of the sea, then resurfaced back into the world. Led by Captain Felix Harker, Riya and the rest of her crew which includes loose cannon Eli Ryder, the accomplished Lilith Wren, the contracted scientist Alexei Nova, and the ever-pleasant Aethran guide Claris Io to embark into the mysteries of Aethra and all its regions as they grow closer to the answers behind the true source of the island’s ancient technology while diving into their own adventures and romances along the way.