Based on a "What If" theory, Emma is sent to the Underworld after killing herself instead of her beloved Killian. She sees many people that she knew in her world as well as the Enchanted Forest. Although Emma has faith, she doesn't know what to expect when she finds herself back in the overworld facing new and more extreme problems to deal with. She has to make big decisions.

After killing the man she loved, Emma is having dreams about him. She suddenly feels anger and hatred towards the people she loves the most. As Emma's anger progresses, she has a strong feeling in her gut telling her something is wrong. Very wrong.