Perigee Corporation toils on the surface of the ocean planet Meridian. An artificial island rises from the waves, and atop the island a luxurious vacation resort is being constructed - the crown jewel of Perigee's business portfolio, proof of their ability to tame even the most hostile planet for human convenience. 

But the company's exploitation of Meridian won't be without consequences. Soon, utter disaster opens the floodgates to an inconceivable secret sprawling beneath Meridian's waters, threaded through the planet's biosphere and rooted in the deepest reaches of the abyss...