Blanket, a house cat who often stares blankly at the windowsill, has been living comfortably with his son Cloak in a high-rise apartment in the city. One day, Blanket and Cloak had to embark on an adventure separately to find the legendary paradise of cats. At the same time, Blanket had to face a past that he didn't want to mention. Perhaps this is also the important reason why Blanket is afraid of the outside world and is unwilling to leave home...