OB tells the story of funny incidents at the OKTV television station office. All these incidents often occur due to the naivety of Sayuti, the Office Boy in the office. Placed in the kitchen, the innocent Sayuti has to interact with fellow workers, such as Odah, who acts like a ruler, Ismail, who often acts cool, and Susi, a janitor who falls in love with Sayuti.

When Raka gets caught in a wild police chase, he agrees to help a fugitive escape—on the condition that the culprit repents for his mistakes.