[2536] How can I use store data in head method

For example, There is a page just like '/movie/_id.vue'.

Before render this page, I must fetch the data of this movie. And I wan't save the data in store. Otherwise I wan't my page's head is the movie title for SEO.

Here is the question:

If I fetch data in fetch method, I can't reach the movie data in head method. If I fetch data in asyncDatamethod, I can't save the data in my store.