When Luna, a talented gymnast, is awarded a bursary to a prestigious private school, she is thrust into the cut-throat world of drum majorettes, aka "trompoppies". After a hazing ritual goes badly wrong, cheerleaders start turning up dead.
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, climatic conclusion.