After a traumatic event at school, Holli wakes up in Thedas with a magical mark on her hand they expect her to use to close the hole in the sky. She goes with it on the provisor the Inquisition will use some of their resources to find her a way home.
As time goes on she comes to learn there is more that connects her to Thedas and the Fade than the glowing mark on her hand.
And after meeting Cole, and growing close to the other members of the Inquisition, there might be more reason to stay in this land of magic and dragons than she'd originally believed.