Sequel to "S.B. and the Healer's Book". 2 years ago, Harry vanquished Voldemort. But Tom's powers reach far beyond the grave, for even without his intervention, the spiral of doom he devised decades ago is set in motion. To save people from extermination, Sirius retorts with a desperate attempt hoping that his younger self and James will succeed to defeat Voldemort's deadly threat.

After 15 years, Sirius Black receives a letter from James Potter about an artifact, which belongs to Voldemort. Facing death, James has entrusted it to a mysterious guardian whom Sirius should support and protect. Sirius starts out on an adventure in an unknown world, which makes him fight the Dark Arts but eventually puts him back on his feet again after years of suffering.