Retired detective Wang Minghao opened a pet store to fulfill the last wish of his fallen partner. Little did he expect that one day, after taking a nap in the store, he would wake up to find himself transformed into a large dog, with a young boy who calls himself Momotaro with origins unknown by his side! Big dog + young boy + shut-in work together to run a pet store business, unraveling the scars shut within each others' hearts and to uncover the secret behind the transformation? A heartwarming comedy that heals the soul!