Shoko is a female investigator who always likes to work alone and is not considerate. During the arrest of the crime boss Kiyoshi, she did not anticipate everything and accidentally shot and injured some individuals, causing strong condemnation from the media. In order to appease the press, her superiors released Kiyoshi and disciplined her for 15 days. After the disciplinary period, Shoko continued to monitor their new base. This time, to prevent her reckless actions, her superiors sent Sano to assist her and also to supervise her. In the middle of summer, her superiors deliberately made things difficult by not allowing air conditioning, causing no progress in the surveillance. Shoko slowly lost her alertness due to the heat. She took off her bra to cool down, unknowingly revealing her huge breasts to Sano. Although he wanted to, Sano didn't dare to do anything because Shoko was known to be strict. But when he woke up, he found Shoko kissing him, which made him lose all restraint. They passionately engaged in a seven-day affair to forget the scorching heat of this summer weather...