After a school party, Sephine Voorthuizen jumps from a tower, shocking the small community. Newcomer Alex is introduced as a skeptical outsider who immediately questions the community's swift judgment.

Although the apparent death of Sephine seems to be resolved, Alex remains unconvinced. At the emotional graduation ceremony, Alex seizes her last chance to confront and expose the true person responsible for Sephine's death, succeeding in bringing the truth to light before she leaves Posthoorn.

The explosive final evidence uncovered in the previous episode is leaked or published online. This sends the Posthoorn community into a final wave of panic and social collapse, setting the stage for a dramatic showdown.

Alex begins to focus on a particular individual with a dubious reputation who may have been heavily involved in the harassment against Sephine. She seeks to expose this person's "sleazy" actions.

With final exams approaching, the students hold a large, celebratory farewell party. While everyone seems keen to forget Sephine’s death, Alex desperately pushes her investigation. In a moment of vulnerability, she shares her shocking theory with an untrustworthy stranger.

Alex’s relentless actions lead to her being marginalized or suspended by the school. A major suspect is seemingly taken out of play, but Alex realizes they are not the main culprit.