Narrative is the skill about influencing someone with a story. The story does not have to be true.
Overcome: Use Narrative to bluff your way past someone, or to get someone to believe a lie, or to get something out of someone because they believe in one of your lies. For nameless NPCs, this is just an overcome roll, but for PCs or named NPCs, it requires a contest, and the target opposes with Empathy or Logic. Winning this contest could justify placing a situation aspect on your target, if buying into your lie could help you in a future scene. Winning this contest may induce changes in the PC or NPC's palace, if some part of their palace depended on them believing the story. Narrative does not have to be about lying. The best lies have a basis in truth, and renaming "Decieve" to "Narrative" doesn't require you to decide which things are True and which are not. You tell a story for long enough, you might start believing it yourself.
Create an Advantage: Use Narrative to create distractions, cover stories, or impressions, be they false or true. You could do the whole, “What’s that over there!” trick to give you a Head Start when you run away. You could establish a Wealthy Noble Cover Story for when you attend a royal ball.
Attack: Narrative is an indirect skill that creates a lot of opportunities you can capitalize on, but it doesn’t do direct harm to an individual.
Defend: You can use Narrative to throw off Investigation attempts with information and to defend against efforts made to discern your true motives with the Empathy skill.