The series revolves around the titular fictional company OK-JEK, which primarily offers on-demand motorcycle taxi service, known as online ojek in Indonesia.

OK-JEK drivers include Iqbal (Oka Antara), Asna (Atiqah Hasiholan), Seno (Ibnu Jamil), Mulyadi (Dodit Mulyanto), Sarah (Niken Anjani), Naya (Inayah Wahid), Shelly (Chika Waode), and Firman (Ben Joshua).

Main characters working outside of the company include Iqbal's friend and stand-based ojek driver Opang (Abdul Adul), Iqbal's mother (Jajang C. Noer), Mulyadi's wife Mawar (Dhianti Jusuf), Mulyadi's son Boni (Daniel G. Harahap), another conventional ojek driver Oded (Oded Kravitz), and Mawar's tenant Nurul (Andi Annisa Iasyah).

At the start of the second season, the remaining main characters are Prima, Seno, Sarah, Naya, Shelly, Firman, Beta, Amira, Abbas, Oded, and Nurul.

[1] For subsequent story ideas, producer Nucky Rozandy said that they asked fans for real-life experiences with motorcycle taxi on OK-JEK social media and turned them into the sitcom plots.

[5] Filming was often done on the streets with the actors wearing jacket, helmet, and long pants, which was noted by Atiqah Hasiholan to be hot for them.

[8] On 23 March 2017, OK-JEK received an award from the chief of the Indonesian National Police, Tito Karnavian, for promoting traffic rules.