Donkey Punch movie plot

Demi, Kim and Lisa are three teenage girls from the north of England travelling to Spain. They met 4 handsome guys from the UK, Marcus Jordan , Josh, Sean and Bluey, at a local pub. Guys work on a luxury yacht. The three girls, unsuspecting, accepted the boys' invitation to drink and dance on the yacht. In order to enjoy the carnival, they decided to go out to sea on a yacht. Under the influence of alcohol and drugs, the boy and girl had sex and videotaped each other. In the meantime, Josh accidentally killed Lisa due to being too excited. And because everyone is on drugs, everyone has nothing to do with it. In order not to leave evidence of the murder, the boys propose to throw Lisa's body in Hai Yu , pretending that she had fallen into the sea. Their idea was immediately opposed by Demi and Kim. Still, Lisa's body was thrown into Yu. Kim stabs Bluey with a knife due to his aggressive words. Taking advantage of the chaos, Demi and Kim escaped in a lifeboat, but they were quickly found by the boys. The moment Demi and Kim got on the boat, Kim catapulted Marcus Jordan with a distress signal, and Marcus Jordan died on the spot. In order to destroy the evidence, Josh killed his friend Bluey, and Sean was also killed by Kim, who did not know it. Kim finally chose to commit suicide by throwing himself into the sea. Demi and Josh were about to leave in a lifeboat, but Josh had other plans. He was going to get rid of Demi, the last witness. The astute Demi saw through his tricks and cleverly avoided his pursuit. In the end, only Demi survived the soul-stirring battle   .