For as long as they can remember, Emma Ji and Ryan Nam have been neighbors and dear friends. Emma relies heavily on Ryan and his quirky family, who kindly agreed to care for her while her own family is away. Ryan diligently tends to Emma's needs, from waking her in the morning to tidying her space, much like a doting mother. However, the Nam family guards a supernatural secret that must remain hidden, though Emma's constant presence makes this increasingly challenging. One day, Emma arrives home from school to find a colossal dog snuggled up on her balcony. Will she uncover the identity of the dog's owner and unravel Ryan's mysterious absences?