A teen's suicide floats painful questions for his family and reveals about a complicated relationship with a young woman who may have the answers.
Conrad and Michelle meet in Florida and discover a connection that will follow them back to Massachusetts; Michelle honours Conrad's memory while the police review their text exchanges in the months leading up to his passing.
Assistant District Attorney Katie Rayburn is reluctantly enlisted to pursue possible charges against Michelle; Michelle is torn between a new friend and Conrad.
As the threat of legal action mounts, Gail and David hire a lawyer to represent their daughter; Co and Lynn struggle with their pasts; Michelle tries to help Coco settle into a new normal.
While the prosecution and defence get their strategies in place for trial, Michelle's isolation from her peers before the trial pushes her to a breaking point; Michelle and Coco see each other in person for the first time since Florida.
The trial begins and a new Michelle emerges; the prosecution lays out Michelle's involvement in Coco's death and Lynn Roy takes the stand; Michelle finds help for her eating disorder while Coco dives deeper into his depression.
Elle Fanning
Michelle Carter
Chloë Sevigny
Lynn Roy
Colton Ryan
Conrad "Coco" Roy III
Cara Buono
Gail Carter
Kai Lennox
David Carter