「“夏休みにピッタリで面白いと話題の映画”を見に行こう」と話していたショウマたち。しかし、いきなり現れた謎の扉で絆斗だけが異世界にたどり着いてしまった！ そこには「暴力担当・ウマッタ」や「はぴまっく社の社長・サチンゴ」などと名乗る、いつもと様子の違う“おかしな”ショウマたちがいて…！
Shoma and his friends were talking about going to see a movie that's said to be perfect for summer vacation and super fun. But suddenly, a mysterious door appeared, and only Hanto ended up in another world! There were "Violence Enforcer, Umatta" and "Hapimach Inc. President, Sachingo", something's off with Shoma and friends—they're acting weird...!
