Dean and Sam's plane crash into an unknown jungle while on a hunt. When they try to get help from Cas, things don't go the way they would have ever expected them to.

Everyone in the world has their other half, their Dimidiam. They are born at the exact same time down to the second. They share everything heart, body, mind and soul. If one got injured, so did the other. If one cried, then so did the other. If one was angry or sad, so was the other. Some times they became best friends, and other's fall in love. They have to met first. Dean/Castiel