[The long-awaited second live-action collaboration of the popular doujinshi manga "Midareuchi"!] Kaori Kitamura, who is the captain of the tennis club, is forced into a sex friend circle by the jealousy of her incompetent junior Ami, and Kaori is forced to have sex almost every day. She tries desperately not to let it affect her daily life, but her body gradually gets used to it... The pleasure takes away Kaori's concentration, and her physical condition deteriorates especially due to the morning-after pill. The sex addiction is definitely starting to cast a shadow on her performance as an overwhelming ace. Meanwhile, Masaya, who begins to notice the changes in Kaori, directly asks his junior Ami to let him join the "study group" to find out what's going on. Masaya ends up joining the overnight study group that was scheduled for the weekend, but...