After varied adventures and a frolic with supersensual Japanese seal-people, the undersecretary discovers that the island is a secret project of his own department supposed to design a radiation-resistant race of humanoids for life after nuclear struggle. As in Wells’s Island of Dr. Moreau , the beasts revolt, and their creator is killed. In an epilogue, the struggle goes on, however whether the ocean’s recuperative powers can address this catastrophe is unknown.