Wu Nai travels through time to become a 62-year-old stingy, widowed old man suffering from a terminal illness and on the verge of death, accidentally activating the tenant surprise life-extension system. As long as he makes three beautiful female tenants surprised, he can reverse his age and extend his lifespan. Possessing four properties and savings, he completely changes his stingy nature with crazy contrast operations, shockingly surprising nurses, security guards, and bar tenants in various ways. While counter-attacking his fate and enjoying life, he unlocks all kinds of adventures, experiencing non-stop hilarious plot twists, defying the heavens to extend his life and living out a brand-new existence!