In a stroke of misfortune, a compassionate young man faces a series of setbacks, from his workplace closing down to stumbling into mishaps on the streets. However, his luck takes a turn when he crosses paths with a fortune teller who introduces him to a unique phenomenon. Through the fortune teller's guidance, the young man unlocks the ability to summon 'Guardian Angels' using his mobile phone, leading to the appearance of a charming group of girls. These Guardian Angels, originating from another realm, are revealed to be reincarnations of the man's beloved pets from the past, returning to express their gratitude for his care. Fast forward a year later from the previous events, the story unfolds as the 12 Guardian Angels reunite with Goro Mutsume. With a stellar voice cast including Nogawa Sakura, Chiba Saeko, Kawasumi Ayako, and a talented ensemble of voice actors, witness the growth and adventures of these endearing Guardian Angels.