Rodney Neumann, a brilliant student of mathematics, has earned a scholarship at Columbia University. After years of spiritual struggle he has adopted materialism as his personal philosophy. In graduate school, he studies under, Dr. Adrian Nacroanus, an eccentric scientist who heads the Department of Genetic Engineering. The doctor’s advancements in biotechnology have earned him a reputation as a near-mythological being. In time, he and Rodney form a master-student relationship based on deep theosophical insights that Nacroanus reveals to him.

Dr. Nacroanus has developed a serum called Eternulum that he claims will increase human longevity. But before he can bestow his gift on humanity he must retrieve a mummified angel named Belthaeous, who has lain entombed in the Cave of the Ancients for thousands of years.

Rodney and Nacroanus journey to the Himalayas to find the hidden entity. Deep in the mountains, Rodney witnesses miracles that shatter his understanding of reality and confront him with forces of ultimate malevolence.