Wednesday follows teenage Wednesday Addams (Jenna Ortega) who has recently been expelled from her high school for playing a lethal prank on her classmates. Believing she would feel more at home in a school for Outcasts, her parents enroll her at Nevermore Academy. During her time there, she must figure out how to navigate her growing psychic ability, solve a series of murders, and reveal a secret that her parents have been concealing from her for years.