The Battle of Ranskoor Av Kolos
Set on the planet Ranskoor Av Kolos , the episode involves the alien time traveller the Thirteenth Doctor ( Jodie Whittaker ) and her companions Graham O'Brien ( Bradley Walsh ) , Ryan Sinclair ( Tosin Cole ) , and Yasmin Khan ( Mandip Gill ) working to stop the alien Stenza Tzim-Sha ( Samuel Oatley ) from using the powers of the psychic race the Ux to shrink the Earth in revenge for his previous defeat and exile thousands of years earlier . 
<triplet> Thirteenth Doctor <subj> Jodie Whittaker <obj> performer <triplet> Yasmin Khan <subj> Mandip Gill <obj> performer