The wild sex of the neighbouring couple makes the pictures on Anna and Thomas' walls shake, while their relationship is now as tingly as a stale cola. This causes additional tension between Anna and Thomas - whether from overtiredness or jealousy. There were times when they could hardly keep their hands off each other. But the routine that has crept in and the regular arguments have pushed the supposed undying love into the background. When Anna invites the neighbours to an aperitif and they make a surprisingly spicy offer, events come to a head: The night becomes a moment of truth...