Yoon’s Everything, Everything is the story of Maddy, a teenager, who, since she can remember, has been house-bound due to SCID, a condition meaning that any contact with the outside world could trigger a potentially life-threatening allergic reaction. In addition, she cannot have any visitors to her house unless they have been thoroughly decontaminated. However, everything soon begins to change when a new family moves next door. She soon gets to know the eldest, Olly, and as she starts to message him on IM, she wishes she could meet him in the flesh. As they become closer, she starts to worry that her illness will get in the way of their relationship and questions whether her situation will ever change…