Dark Country movie plot

A newlywed couple went to Honeymoon , and in order to get a short cut, they went into the desert. After the heroine 's intense emotion , she turned on the headlights, and suddenly a person who was in a car accident and covered in blood appeared in front of them. After the hero swoops in the direction to avoid them, they save the man who, surprisingly, knows the hero's name. Moving on, after a while, they found a dead end. Then they went back and continued to look for the exit. (There was no car in the accident on the way back??) When they were about to find the exit, the man covered in blood said, "The only way out." Holding the male protagonist's neck, after some struggle, the male protagonist killed the man covered in blood. Since no one can prove that the male protagonist is self-defense, it will only be considered a murder. The couple finally decided to quietly bury the blood-covered body. After burying the body, they drove all the way to find a rest area. The couple entered the rest area in order to remove the blood on their bodies. At this time, the hero finds himself throwing the watch engraved with his name in the burial ground. The hero asks the heroine to go back together to find the watch, but the heroine doesn't want to go, so they have a dispute. The heroine feels that the hero kills the man and she doesn't need to bear it together with the hero. The male protagonist said, "Okay, by the way, go to the police station to report the case." Later, the male protagonist compromised, and they reconciled. The male protagonist left the female protagonist in the rest area to look for a watch. When he arrived at the burial, he found that the cemetery was empty. , At this time, a few gunshots were heard in the rest area. The male protagonist hurriedly drove back to the rest area, only to find that there was no female protagonist. At this time, I saw the missing person notice on the bulletin board in the rest area, the camera flashed by, and everyone could find a photo of a couple (the heroine and the hero). Later, the male protagonist found the bullet casing and followed the trace to find a mound. The male protagonist digs wildly for a while, revealing a woman's hand. The male protagonist is startled, but carefully examines that the ring is not his wife's. The male protagonist thought to himself that his wife might be killed, so he hurriedly drove and asked for help. All the way hurricane, almost collided with a police car. Then after a while of questioning, the police took him to the rest area to find his wife. On the way, the police said that this area is called a garbage dump because there are many murdered people, prostitutes, gamblers, and people who come here to cheat and kill people. Then, the police received a message from a colleague that the heroine had been found. So I drove to the scene.A Witness out of the Blue a lot of cops. At this time, the male protagonist found that the deceased in A Witness out of the Blue was his wife, and found his watch with his name there. The male protagonist suddenly realized that he could no longer pay his innocence, and could only run away, driving away. The car overturned, covered in blood, and then a car drove across the road at this time. A couple panicked and rescued him. At this point the male protagonist understands that this is an infinite loop, In fact, the man covered in blood is the male protagonist. He realizes that the end can only be counted if he kills himself who started it.