Lu Qing'an possesses an extraordinary ability: destroying life force allows him to increase his lifespan. After accumulating 250,000 years of lifespan in the mortal world, he ascends to the Immortal Realm, only to be imprisoned by the Huang family as a 'Lifespan Spring' whose longevity is harvested for their benefit. Enduring humiliation and concealing his true abilities, he secretly breaks through cultivation levels, exchanging lifespan for treasures through the Longevity Exchange Tower, including an Immortal Grade Six flying vessel, defensive magical artifacts, and many other hidden trump cards. Step by step, he plots his escape from their control.