My initial ideas

Three friends walking down a path (wooded?) chatting.One of them thinks they see something in the woods and mentions it to the others but they shrug it off, they continue walking and he mentions it again, the other two again shrug it off but are more wary now. A third time he thinks he sees something and this time goes off to investigate it, one of the others goes with him but the other one stays on the path. They enter the woods and look around for a bit and see nothing, they return to the path and their other friend has disappeared and is nowhere to be seen, the others call his name out.
Characters – Three boys, 16-18 age range.
Character 1 – Main character, confident, tall,
Character 2 – Friend who sees something in the woods, cocky, small, funny
Character 3 – The one who disappears – nervous, the smart one
Audience – 16-30
Genre – Thriller/Horror/Action
Location – Long, straight path through a wooded area.
BBFC – 12/15

This is the idea that I decided to use as my final idea.