Agu follows Etim, a 50-year-old, well-read lawyer who is down on his luck and struggling with his career, not to mention an alcohol problem. After crossing paths with Pius, a believer in traditional worship who is accused of killing his friend in a forest, Etim jumps on the case as a chance to revive his dying career, going head to head with the ambitious prosecuting counsel, Victoria, with whom he shares a complicated history.