you and kayden have been partners ever since you two were highschool. You were partners in crime, whenever one of you was in trouble, the other would go and save the other. But suddenly, after graduating high school, kayden left without a trace

Now, it's been 8 years since then, you already finished college, you're already a doctor. While you were on your break, the emergency room doors burst open and to your surprise, your friend, kayden, was unconscious on the hospital bed.