The Honnouji Academy Cultural & Sports Grand Festival comes to an abrupt and very unexpected conclusion! Battle lines are drawn and Ryuko must decide who is friend and who is foe. But will she have the power to resist the power of the Life Fiber?

Ryuko is awake and she's not happy. Intent on killing Ragyo and Nui, she heads out, leaving her allies behind. Without her power, Nudist Beach must decide what their next step is, but a new piece of intel spurs them to action!

The ongoing battle presses towards Honnouji Academy, but Ragyo and the Original Life Fiber stand in the way. Ryuko and Satsuki set off to face them, leaving Nudist Beach's defense to... Mako?! Meanwhile, a crazed Nui continues working feverishly...

It's graduation at Honnouji Academy, but not everything is as it seems. Ryuko Matoi and the gang must defeat their final enemy.