In the first of three final shows, the four strongest chefs from the competition return to battle it out for the title of Junior MasterChef. They must invent a dish out of ingredients given to them - what will they create off the top of their heads and will it be good enough to eat? The pressure then piles up as presenters John Torode and Nadia Sawalha send them on a monster mission to cook lunch for Doctor Who and his Companion. Will it be a galactic disaster or will they make just what the Doctor ordered?