Shugaron was once a peaceful monster that lived in the Shirakami Mountains, however it greatly loathed the sounds of vehicles and after construction was done to allow traffic into the hills, the sound of vehicles disturbed the monster into becoming vicious and brutal. His wrath was first felt when he was awoken by a bike gang who were looking for trouble, and by MAT's training, the bike gang became victims of Shugaron’s wrath.
Shugaron's wrath continued into the night by destroying the bridge that connected to the land to prevent the noise from entering his home. Another thing that annoyed Shugaron was the amount of Sulphur that coated the valley of where an artist and his family once lived. Now it's only inhabitant was the deceased artist's daughter, whom was protected by Shugaron, who was the her father's spirit. MAT arrived by force through jets and attacked Shugaron as a threat. During the battle, Shugaron’s right eye was blown up causing the monster to rampage wildly with no sense of control, wandering into the sulphur valley and destroying the his home and killing the girl as well.
Goh then transformed in Ultraman Jack and the two began to battle one another. It seemed Shugaron had the upper hand, hitting Jack with his heat ray, but Jack managed to hold his own hurling Shugaron up into the air and back down. Finally Jack ran forward just as the monster was getting back up and after one swift blow to the gut, Shugaron fell forward, dead.
ＭＡＴは特別訓練の実施中、オートバイの若者たちが怪獣シュガロンに襲われるという事件に遭遇する。どうやら、彼らは故・牛山画伯の一人娘である静香をからかっていたらしい。まるで静香を守っているかのような怪獣シュガロン。もしかしたら、シュガロンには牛山画伯の霊が乗り移っているのだろうか？
