ALIEN KILLERS! MUTATED SEA MONSTERS! HUMANITY'S LAST GASP!

     Months after mysterious corals drew 99% of humanity into the sea, a band of survivors ekes out a hollow existence on a remote British island. When two people are cast up on the beach, completely blue, but very much alive, the island is thrown into turmoil.

     What is the secret behind the mass extinction event... and will this pair of altered humans prove our salvation - or our undoing?!

Months after mysterious corals forced 99% of humanity to walk into the sea, a band of survivors eke out a hollow existence on a remote British island. 

When two people are washed up on the beach, back from the dead and with their biology completely changed, the survivors are thrown into chaos. 

Does the pair represent humanity's last hope - or have they returned as its executioners?

What caused the mass extinction event? How did these two return from the deep, when billions died? And what dark forces have followed them back onto the land?

Lastly, and most importantly, what is the coral, what does it want with the Earth... and what does it have to do with a man who went missing, shortly before the Sea-Sickness hit?