Daw darganfyddiad cyffrous ag Alwen, merch o Landudno, ac Olivier, sydd â'i wreiddiau ar Ynysoedd Chagos, at ei gilydd. A all y ddau ifanc ddod â hanes yn fyw eto, ac a fydd mistar ar Mistar Mostyn?
An exciting discovery by Alwen, who hails from Llandudno, and Olivier, whose roots are on the Chagos Islands, bring the young people together. Will they be able to bring life to their histories?
