Teenaged Leyla McQueen, who lives beneath the ruins of a submerged London in 2099, joins a prestigious submersible race in the hope of clearing her father's name before encountering government corruption and a hidden world. Great Britain, the last days of the twenty-first century. Sea creatures swim among the ruins of Big Ben and the Tower of London, and citizens waver between fear and hope; fear of what lurks in the abyss, and hope that humanity...