The Doctor (10th Doctor) swaps places with movie Strange and has to take over his job throughout all the movies he's been in.
Simultaneously Strange from the movie has to go through The Doctor's role in all episodes he's in and make do.
How do they do?
Bonus, Strange from the movies and The Doctor both take the place with Comics Strange and have to try and work together to do his job. How do they do?
Bonus Cumberbatch: Movie Strange and the 10th Doctor Sit and Talk, what do they speak on?