Momiji comes to the group wanting to become a dancer, with Haneru given the stressful task of teaching her the basics. As Haneru struggles to keep her under control by day, at night, Momiji investigates Green Square's arena, sensing a dark energy. The next day, as Momiji becomes determined to learn how to snap her fingers for a salute, she takes Haneru's lessons more seriously and manages to jam well with just isolation moves. After seeing Jey's moves, however, she decides she can't match up to him and quits dancing, but not before learning to snap her fingers. Before leaving for the mountains, Momiji explains how she felt an ominous aura.
As the teams assemble for the fourth round of Dance Road, the competitors' fears about the legitimacy of the contest are allieviated when Jey speaks directly to them via hologram. As the contest gets underway, Team Sakura and Explos1ve MAchine Guns reveal they have merged together to form Blossom Bullets, impressing everyone with their debut performance. Encouraged by Kumo's words, Haneru comes to understand that Tribe Cool Crew's 'change' comes from how much they've evolved since they formed, deciding they should just perform the way they are now. Both Tribe Cool Crew and Blossom Bullets make it through to the next and final round of Dance Road
With Crowd High becoming widespread, even to the point that Haneru's school has to ban it after a student gets hurt attempting it, Haneru confronts Lui and Moe, who suggest he try it for himself. After some deliberation speaking with Kuro, Haneru agrees to give Crowd High a try, which comes as a shock to Kanon.
After practising the Crowd High dance from Lui and Moe, Haneru starts to take a liking to it, prompting an objection from Kanon, who believes Crowd High makes people forget why they want to dance. Just then, Jey contacts Haneru and the others, telling them of the final theme, "Spirit", with Dance Road's final to take place on his personal island, Bright Island. The next day, Haneru decides to tell Lui and Moe that he won't adopt Crowd High, as he wants to one day dance alongside Jey.
Following Kumo's recovery, the gang head to the beach for a training camp. There, Kumo comes across a mysterious girl named Hotaru who once witnessed Jey dancing on the very same beach, making the ocean shine. Upon checking into their hotel, Kumo learns that Hotaru was the owner's daughter who had been gone for ten years ago. Wanting to fulfil his promise to Hotaru, Kumo asks the gang to help make the ocean shine with their moves. Together, the gang performs moves similar to Jey and make the ocean light up, which is later revealed to be caused by water fireflies reacting to their dance. The next day, Kumo is surprised to see Hotaru alive and well as a married woman, leaving Kumo to wonder who the girl he met really was.
As Tribe Cool Crew and Blossom Bullets all set off to Jey's private island for the final round of Dance Road, Yuzuru brings along Momiji, who has been investigating the disappearance of Crowd High trendsetters. Arriving on the island, a man named Nelson gives everyone a tour, telling how Jey had taken care of him and several over children from poverished countries, before assembling with the other finalists. There, the project's lead Mabel reveals Jey to be a Dance Roid robot that replaced the real Jey after he fell into a coma five years ago, which does not settle well with Haneru. Mabel further reveals the purpose of Dance Road is to recruit ghost dancers who will update the Dance Roid with new moves. As everyone is given the night to decide if they wish to proceed, Master T takes Haneru and the others to see the real Jey in his comatose state, further driving their desire to dance. The next day, the Dance Road finals are suddenly crashed by Lui, Moe, and the other Crowd High trendsetters, as Gallagher announces his plan to take over Dance Road.
Gallagher, believing the Jey El Project is simply self-service, takes Mabel hostage and pressures the Dance Road contestants into a dance battle against the Crowd High trendsetters. Just then, Momiji appears, revealing the secrets behind Crowd High, including the adverse effects on the body and mind, though is forced to flee before she can explain what Gallagher is scheming. As Momiji is approached by Hewitt, the dance battle commences, with many of the teams falling under the power of Crowd High. Kumo and Mizuki step up to face Lui and Moe once again, winning against them after the physical toll on Lui and Moe's bodies finally affects them. However, Gallagher then brings out his top trendsetters, Gold and Silver.
As Haneru and Haneru's friends and family miss having them around, Koji and Ayumi bond over their love of seeing their friends dance. Back at the island, Momiji learns of a secret plan that Gallagher is planning while Lui and Moe think back to their original style of dance. Just as Blossom Bullets step up to battle Gold and Silver, Gallagher brings out some robots to prove the effectiveness of Crowd High without the need for any spirit. Undettered, Koji brings out a seemingly unending dance move, managing to win out against the robots. However, before he is due to fight against Gold and Silver, he appears to incur a foot injury.