A Pietrasanta all are excited for the annual party of summer end. Here we find four characters: Merigo, a naive guy passionate of bike; Pierre, son of the mayor; Simone, a pestiferous kid; Mario, lifeguard of "Bagnomaria".

李满仓之前在城里打工，身体健壮，因朋友去世回到家乡，留下来和嫂子刘秀英共同经营澡堂子，共同面对帝王洗浴老板张青阴招，李满仓研制出药包提高客流量，却被张青派人盗走药包导致生意惨淡，张青连出阴招恶意举报澡堂子导致停业。李满仓和刘秀英最终通过自己的努力重新澡堂子经营起来，张青因为自己的贪婪和阴狠，害得自己陷入绝境，求告李满仓收购了帝王洗浴。