Auditions for the alternate position are more competitive than ever as a new group of talented dancers vie for the spot; Nick and Emily use the auditions to help determine the new Dance Captain of A-Troupe.
Piper gets Finn and Amy together in the hopes of sparking a friendship between them, but finds it quickly turning into a disaster. Meanwhile, Summer struggles to keep track of rehearsals, adjusting to unexpected changes in A-troupe.
With a thunderstorm raging outside and rehearsal time running out, Henry struggles to pick up the choreography for a Nationals routine; trying to help Henry, Summer finds their relationship tested.
Piper unearths a shocking truth after helping Finn with a new romance. A-Troupe decides to take on a new opportunity, but Nationals is right around the corner, and the studio is busier than ever.
A-Troupe buzzes with excitement, ready to perform for the biggest opportunity of their lives. But their excitement is cut short when Summer fails to show up. Piper and Amy's friendship is tested when Piper catches Amy stirring up the past.
Emily finds a staggering fact that could spell the end of A-troupe's chances at nationals and the end of one dancer's spot on the team. Fearful of jeopardizing her friendship with Amy, Piper attempts to keep her feelings secret.
A-Troupe faces stiff competition in a final performance but are left shocked when they discover a staggering revelation from a former teammate. TNS makes a decision about their final performance that alters their dance careers forever.