In the first installment of the series, readers are introduced to Sarah, a young woman who wakes up one morning to find herself in a dense, mysterious fog with no memory of how she got there. As she navigates this eerie landscape, she discovers that the fog conceals secrets and memories from her past that she must uncover to find her way home. Along the way, Sarah encounters enigmatic figures and faces both physical and psychological challenges that force her to confront the darkness within her own mind.