A tornado hits the car carrying four high school students, killing them all. In the town of Silverton, Oklahoma, the local high school senior class is preparing for graduation. The high school's vice-principal, Gary Fuller (Richard Armitage (actor)), has asked his two sons, Trey and Donnie, to record messages from the seniors for a time capsule to be opened in 25 years. Elsewhere, Pete (Matt Walsh (comedian)), a veteran Storm chasing, has been attempting to intercept and film tornadoes using a heavily armored Tornado Intercept Vehicle nicknamed Titus, but has come up short all year long. Upon learning of a major line of developing storms, the chasers confer and decide to head for Silverton in hopes of filming tornadoes. After arriving in Silverton, the team discovers that the cell they had been chasing has dissipated, upsetting Pete. As the team reconvenes to determine its next move, the Silverton cell abruptly strengthens, resulting in a hailstorm and tornado. As the team films, the funnel abruptly shifts course and heads for the high school.