Hamasaki Densuke is now in his third year at the big construction company Suzuki Construction. His enthusiasm for fishing reinforces his lovable character and he now has a bizarre mentoring relationship with his company president Suzuki Ichinosuke whom he calls Su-san. This time, the commotion that he creates with his boss Sasaki Kazuo, the eternal mid-level manager, and other employees escalates, and a strong, handsome rival emerges and edges into Hama-chan's relationship with his girlfriend Kobayashi Michiko.