When a child is born with rare diseases, it is usually the father that abandons the family; but not 6 dads in this film. Coming from different backgrounds, they do their best to care for their children while making a living to support the whole family. These dads certainly need an outlet for the pressure on their minds, so they turn to music and form a rock band called ‘Sleepy Dads’. With an average age of 52, they aim to hit the stage of the highly competitive Sea Music Festival. For this over-aged amateur band, it is as difficult as Apollo missions to the moon. Nonetheless, these fathers show no fear, because they already led their daily life on the edge. There is nothing these fathers cannot conquer, since their children’s happiness is their greatest mission of all.