Grace (Samara Weaving) lost her parents since she was a child and grew up in a foster family. She never thought that she would meet Alex (Mark O'Brien), the son of a wealthy family. The two fell in love smoothly and the road to marriage was lit up all the way. Finally, the day that Grace was looking forward to came, but on the wedding night, Alex told Grace a very strange news. It turned out that there was such a tradition in Alex's family that every bride who married in had to complete a game on the wedding night, and the specific content of the game was determined by drawing cards. Although she didn't understand such rules at all, Grace decided to endure it for a while. Unexpectedly, Grace drew the worst card-hide and seek. Grace must find a place to hide before dawn and cannot be found by anyone, otherwise there is only a dead end.