For Shion, handjob contests with his friends are over! Indeed, as his mother has just remarried with a new man, and now he is forced to move to a region where he knows nothing and nobody. Badly received in his new school where he quickly became bullied, as well as not being able to find his place in his new home, the young high school student will evacuate all his frustrations in the river. In less time than it takes to say, he became the father of Sauman, the salmon man! His daily life will be forever changed.