Shomuni, that's the common name given to General Affairs Section 2 of a trading company. Here are six women who have ended up in this department known as "the dump" for office ladies. But Chinatsu Tsuboi (Makiko Esumi) declares that the value of woman is equal to the number of men. With her as the central focus they create a totally new type of office lady drama that does away with those heartless men still caught up in worn-out social ideas and the class system within the company.
Shomuni 2013 sees a total change in the members of Shomuni, except Esumi Makiko (Tsuboi Chinatsu). It has been 10 years since Shomuni was dissolved in Manpan Corporation, and the members have all gone on into retirement. Tsuboi Chinatsu's whereabouts are unknown. Maruyama Shiori is an Olympic gold-medal hopeful and was recruited as part of their PR advertising. Due to cost-cutting measures, the sports club in Manpan was dissolved, and Shiori was deemed to have no value now. To make Shiori leave, the company started tweeting bad things about her. Poor Shiori is now an outcast, and no one totally dares to be seen with her. Except for the team of OL, made up of Minami Madoka, Abe Reiko, Kojima Masuko and Fukuda Masuyo, appears before her one by one.
One day, Shiori comes across a lady who seems to be running away from someone. The lady is the legendary Tsuboi Chinatsu! Has Chinatsu rejoined the company again? What is the objective of the company and also Chinatsu?