Rescued and nurtured by Miku's family, Happy, once a forsaken pup, now thrives in a world of play with the child, strolls with the jovial Father, and feasts on Mother's delectable creations. Amid this bliss, a shadow descends as Father falls ill, fracturing the once-unbreakable familial ties. As the family unit disintegrates, only Happy and Father endure. Determined to seek solace in the distant south, Father and his loyal companion embark on a journey marked by challenges and victories, reaffirming the timeless bond between man and his faithful canine companion.