https://www.youtube.com/watch?v=Nh4d_FZchPU
TL;DR — The year is 1692 in Salem, Massachusetts, a religious settlement where Reverend Paris is concerned about his daughter Betty's mysterious illness. Accusations of witchcraft arise, particularly involving his slave Tituba and niece Abigail Williams, who was seen dancing in the woods. As the situation escalates, Reverend Hale arrives to investigate, leading to a cascade of accusations and confessions, with Abigail manipulating the narrative to implicate others.
Takeaway — The events of Act 1 establish a climate of fear and suspicion in Salem, where accusations of witchcraft, fueled by personal vendettas and manipulation, quickly spiral out of control.