The old world was replaced by the new one a tiny piece at a time. An apocalyptic event that took place over several decades rather than hours or days, it happened so silently that towards the end those who were unprepared panicked and caused chaos and death on a global scale.

People had all sorts of theories after it began. Those that survived the riots and eventual collapse of any form of organised human civilisation at least. Some felt thankful for still being alive while others sought to consolidate their gains and gather other survivors around them.

The world that they had lived and thrived in had changed, and the deaths of a large proportion of the global population had left those who survived with a new challenge. How to survive in a world where the oceans dominated the planet.

After a time, humanity survived. Until only a few short months after the apocalyptic event had ended something terrible happened.

The difficulty rate had gone up and the tutorial was over. Fresh recruitment began. The gods needed new players for their game and the opposition needed new heroes to end it.

Enter Carisa, a brilliant and beautiful scientist who struggles with complex emotions and overwhelmed with guilt from her past.

Through private experiments and treatment she tries to change her body through technology and genetic alteration to fulfill her childhood dream.

To become a real mermaid.

Selected as a new candidate she finds herself in a world drowned by gods and populated by sea creatures, players and original survivors.

Water, water, everywhere,

And all the boards did shrink;

Water, water, everywhere,

Nor any drop to drink.

-Samuel Coleridge, The Rime of the Ancient Mariner