The movie Truth or Double Dare follows a group of former high school classmates who reunite for their 10-year reunion party. The night begins with catching up on old times and reminiscing about their high school days. As the night progresses, they decide to play a game of "Truth or Dare" to spice things up.
Things take a dark turn when the game becomes deadly, and classmates start dying one by one. Each time someone chooses Dare, they're given a challenge that they must perform, and if they fail to complete it, they die. If they choose Truth, they must reveal a deep, dark secret. The challenges become increasingly dangerous and insane, and no one knows who's behind all the deaths.
The remaining survivors must work together to uncover the truth behind the game and stop the killer before it's too late. As they dig deeper, they realize that some secrets are best kept buried, and they're forced to confront the sins of their past.
The tension builds to a thrilling conclusion as the survivors finally unmask the killer and the truth about their past is revealed. In the end, they learn the real price of playing games with people's lives and the importance of forgiving and moving on.