When Minji spots a homeless guy sleeping in the alley behind her grandmother 's coffeeshop,she decide to leave him a cup of coffee,a bag of chocolate covered coffee beans, and some pastries to tide him over. Little does she know that this random act of kindness is about to turn her life upside down.the adorable"vagrant" Is actually a real guardian angel on a break between missions,and he simply won't go until he can reward Minji selflessness...