The third installment of The Eminents series follows the adventures of Gilbert Wright as he leaves his friends and heads east into the sea. Gilbert has always tried to look at the bright side. But thanks to his father's scientific "experiments" his life has become a prison. When he is sent on a mission, he thinks his unique condition will finally be useful to the cause. Through underwater bases, fierce sea creatures, island prisons, and more, Gilbert must discover who he really is and learn to let go of the anger of his past.