In William Shakespeare's play "Romeo and Juliet," Friar Laurence devises a plan to help Juliet avoid marrying Paris by giving her a potion that will make her appear dead for 42 hours. He instructs her to take this potion the night before her wedding to Paris. By doing so, she will be placed in the Capulet family tomb, and Friar Laurence will send word to Romeo, her true love, about the plan so that he can come to her rescue when she awakens.
The plan relies on several key details: Juliet must assure her family that she is willing to marry Paris, take the potion, and then, once she awakens in the tomb, Romeo will be there to take her away to Mantua. The plan is intended to save Juliet from the unwanted marriage to Paris, but it ultimately leads to tragic misunderstandings and consequences.