SOTUS: The Series (Thai: พี่ว้ากตัวร้ายกับนายปีหนึ่ง) is a 2016 Thai LGBT drama produced by GMM TV Ltd. and directed by Uphold Tradition, starring Prachaya Ruangroj and Perawat Sangpotirat. It was filmed primarily in Thailand.
The series is based on an online novel, "SOTUS พี่ว้ากตัวร้ายกับนายปีหนึ่ง" by BitterSweet.
During the first 8 episodes, the series ran from August 20, 2016 to October 8, 2016. During the Thai King's Bhumibol Adulyadej passing the series were ordered to stopped for 30 days to mourn. The series final 8 episodes will then be release from November 19, 2016, making it's final episode on the January 7, 2017, it's initial final date was originally planned to be on December 3, 2016. All episodes air every Saturday on GMM Grammy - GMM One. Repeat episodes aired on Line TV.
The "Gear" is one of the engineering mechanical devices in the cogwheel system (as in a clock). Having one signifies that one is a student of the Faculty of Engineering. However, to get one, all engineering freshmen must first undergo the SOTUS (acronym for Seniority, Order, Tradition, Unity, and Spirit) system. Arthit (Perawat Sangpotirat), one of the third year seniors, often abuse his power over the freshmen by making them do things against the rules. Freshmen students are practically powerless to complain or resist any orders given by their seniors. Arthit was seemingly unstoppable, until Kongpob (Prachaya Ruangroj) stood up against the abuses by the former. Continual encounters between the two developed from animosity to something much more affectionate.