In 2004, a camping trip to Pulau Ubin turns tragic for teenagers Leonard, Sami, Riza and Jasmine when their friend Chris mysteriously disappears without a trace. 15 years later, Chris returns just as mysteriously in a fog of amnesia. In Reunion, a suspenseful 13-part drama, the secrets behind Chris' disappearance and return are unraveled - secrets that the five friends will wish had remained dead and buried.