Atlantic (Tic) Brewer never knew her father, a hydrologist who died at sea before she was born. Raised by her mother and an elderly neighbor, Tic's small home on the Edge is under threat from rising sea levels. At sixteen-years-old Tic is smart and studies hard as she prepares to attend one of many Academies established worldwide when the International Change Agreement warned of imminent environmental collapse. There she meets friends Phish and Lee, who like her pledge to save all human civilization in a race against time.

Tic follows in her father's footsteps, hunting for the cause of unprecedented icecap melt, but when she accidentally stumbles upon a note, suspicions are raised surrounding his untimely death. To solve both mysteries, Tic is helped by her new friends, but when they dig deeper Tic is confronted by enemies she never knew she had. In an environment where cities have been swallowed by rising sea levels and millions have died from natural disasters, starvation, and disease, Tic finds herself and those she loves in an urgent fight for their own personal survival.

Far from your typical boarding-school adventure, Code Blue is a young adult eco-thriller that challenges readers with questions relevant to our time.