When Ray and the gang tag along on an unexpected descent in pursuit of the enigmatic sea serpent, the light of truth is cast upon Dr. Michio's monstrous mania! Further complications lie in wait as a hidden terror from Nier's past resurfaces! With their bravery lessening the deeper into darkness they go, how will our heroes contend with the dweller in the deep? When a phanton menace rears its ugly head will they be dashed apart by the fury of the TEMPEST BELOW?