Watch the start of Dishonored 2 as Emily
Corvo returns as a playable character and he's joined by Emily Kaldwin - that's the kid you were trying to save in the first game. Now she's all grown up and has her own powers, and you can play the entire campaign as either of these two characters.
Here's a look at the start of the game as Emily. Obviously if you don't want any spoilers, don't watch!