Han Jihyuk, the Necromancer who saved humanity on the Seron Continent, returns to Earth in pursuit of a peaceful and happy retirement. However, from day one, his plans for a tranquil life spiral into chaos. At the age of 20, protagonist "Han Jihyuk" was summoned to the Seron Continent by a mage named Teros. There, he lived as a Necromancer, enduring countless battles and hardships. After many long years, Jihyuk finally defeats the Demon King and is sent back to Earth. However, due to the principles of causality, the Earth he returns to is not the one he remembers. It is now overrun with gates and monsters. To make matters worse, the treasures he painstakingly brought back with him vanish without a trace. Left with no other choice, Jihyuk begins working as an F-rank Awakened to make ends meet. When will Jihyuk finally achieve the peaceful retirement he's deramed of for so long?