Sui Jin, an amateur poet and full-time guardian, originally wanted to keep a cat secretly in the office, but was accidentally chosen to save the world - for the last time. It's a pity that this "doomsday crisis" is not an invasion of aliens or the awakening of the devil, but the fact that the coffee in the city suddenly turned into tomato juice! People collapsed, the city fell into chaos, and even his favorite cat began to doubt life. Sui Jin's motivation is simple: to restore normal coffee supply and avoid being sued by the cat. So he embarks on the most absurd ultimate battle in history, partnering with an unemployed god, an old classmate with deep resentment, and a smart coffee machine that can complain. Core conflict? Save the world or save your morning mood. Highlight? Every crisis is like an off-line variety show; every victory relies on imagination and jokes. The Guardian's final battle turns out to be a legend written in laughter and cat hair.