"1915. Following a horrific experience at Verdun, Private Tommy Catkins - shell-shocked and suffering head injuries - is sent to a mysterious island hospital in Wiltshire, where he is subjected to the primitive treatments of the era. But the island appears to be a portal to the enigmatic land of Onderwater, where lives a race of blue-skinned people with tails. Will Tommy be tempted by Onderwater, or will the love of Nurse Vann pull him back to reality, and recovery?"--Provided by publisher.