Carthaginian War veteran Eubulides and his former slave, Lad, are sold by the pirates who captured them at the slave market in Pergamon. The head of the secret service of King Attalus becomes their new owner. Pergamum is going through bad days - the Romans already see it as their province. All that remains is to persuade the seriously ill king to bequeath the kingdom to Rome. Having become friends in slavery, Eubulides and Lad soon gain freedom, but inevitably find themselves drawn into a cruel political game started by Attalus’s first assistant. The novel “The Testament of an Immortal” by the famous Russian writer Evgeniy Sanin is a continuation of the novel “ An eye for an eye."