Luna, a talented gymnast from "the wrong side of the tracks", is awarded a bursary to a prestigious private school. To integrate with an elite group of drum majorettes, AKA "trompoppies", she joins a hazing ritual that becomes a tragedy.
The Trompoppies are beginning to crack under the pressure of their terrible secret. Who will be the first to break? Jill and Fred's marriage is on the rocks, but with so many eyes on them, they have no choice but to push through: for now.
With a murderer on the loose, no one is safe and everyone's a suspect. Tomas, the police's primary suspect, begins to crack under the pressure. Jill hires a private investigator to find the still missing Zanne.
Luna receives a threatening message. The Trompoppies are tasked with coming up with a new routine, which forces them together again. Madelyn makes a shocking discovery about Zanne and confronts the Petersons with her findings.
The Trompoppies' secret is becoming harder to keep. Who is next on the killer's list? Luna starts to fill the void left in Zanne's absence - she's the new Queen Bee. Jill goes on the offensive to protect her family's reputation.
With only Luna and Valarie remaining, the list of possible victims grows alarmingly short. Also, a certain grave on the sports field is close to being discovered. As Jill's patience wears thin, Tomas is roped into doing her dirty work.
In the wake of Valarie's death, all signs point to Luna. And as the last Trompoppie standing, she's forced to take care of the incriminating grave all by herself.
An ill Luna realizes that she's in far more danger than she previously thought. Jill makes a last-ditch effort to save her failing reputation and career. After receiving a threatening message from the killer, Tomas sets out to warn Luna.
Luna is on the run with nowhere to go. Madelyn makes a shocking discovery that leads her to the middle of the sport field where she starts to dig. Jill will stop at nothing to repair her precious reputation.
After the murderer's identity is revealed, Luna has to fight for her life on several fronts. In the series finale, "Trompoppie" comes to an explosive, climactic conclusion.
