Who Did It?

For their anniversary, Iris and Ethan decide to go to an island to celebrate it with their friends. It's meant to be a break from their life. A small holiday. But their plans are tarnished when one of them is murdered in this very island. Now with the killer roaming free, they are stuck on this island. Will the murderer be found? Will they be able to leave this place safe? Or will this trip, which was supposed to be a small holiday turn into a series of murders?