Mae bywyd yn edrych yn hawdd i’r cwpwl perffaith Ivy (Olivia Colman) a Theo (Benedict Cumberbatch): gyrfaoedd llwyddiannus, priodas gariadus a phlant gwych.
DOWNTON ABBEY: THE GRAND FINALE follows the Crawley family as they navigate personal and financial challenges in the 1930s, culminating in a heartfelt farewell to the beloved series.