Young Kofi lives and dreams on the banks of the river Offin. He loves these things above all else: his family, the fireside tales of his father's father, a girl named Ama, and, of course, swimming. It is in the river that he feels invincible and where he thinks he can finally prove himself in a race against his schoolyard rival. But the river also holds dark secrets that Kofi will soon discover. Told never to venture there after nightfall but never told why, Kofi seeks his own answres. One night is all it takes to transform a life. As his world turns upside down, Kofi ends up on a harrowing journey that steals him away from everything he loves.