Crayon Shin-chan: The Legend Called Dance! Amigo!

At Futaba Kindergarten, three teachers map out plans for the upcoming annual sports day. Miss Matsuzaka suggests a samba routine, but Miss Yoshinaga and Miss Ageo dismiss it as impractical for the kids. The planning session sets a lighthearted tone before a looming sense of unease.

Miss Yoshinaga, drunk and walking home, is confronted by a lurking presence that mirrors her exactly. The chilling mirror-image hints at an uncanny force at work in Kasukabe. The encounter leaves a lingering sense of dread for what’s to come.

The next morning Shinchan arrives late but louder than ever, delivering his crude jokes. Surprisingly, Miss Yoshinaga isn’t repelled, and the samba plan is revived as a viable option for the big day. The group reopens discussions with renewed, if uneasy, energy.

Masao notices Ai Suotome's unusual affection, which hints she isn’t herself. Bo reinforces the fear with an urban legend about look-alikes and replacements. The idea that someone could be swapped fuels a growing paranoia among the children.

Back at Kazama's home, his mother's dancing unsettles him and a strange ache in his chest grows. His young mind cannot articulate the danger, but distress is clear. The unsettling change marks the first signs of a larger threat.

The family watches a samba festival broadcast from Santa Monica, intensifying the sense that appearances are deceptive. The vibrant rhythm seeps into everyday life and heightens the tension around doubles. The idea of dancing as control takes on a new, ominous meaning.

At the city mall, Hiroshi glimpses a doppelgänger; Misae spots clones of herself and Himawari. A mysterious beautiful woman rescues Shinchan as masked figures in capes destroy a clone Misae. The mall sequence confirms that doubles are widespread and dangerous.

The family escapes the mall but a second wave of danger unfolds when a car crashes into their house, delivering Jackie Feeney—the real Shinchan—bringing a fragile sense of safety. The sudden arrival shifts the momentum from confusion to urgency. The stakes are raised as the true identity of their ally comes into question.

With the city overrun by konjac-based doubles, the group heads toward a sanctuary in the park to regroup before sunset. Clones pursue the kids one by one, forcing quick decisions and urgent cooperation. The risk to every beloved character becomes personal.

Jackie explains that an international secret society, the SRI, studies the clones created by Amigo Suzuki. The goal is to replace ordinary people with pliant doubles who dance to her command. The revelation frames the battle as a larger conspiracy rather than a single villain’s plan.

Jackie, Shiro, and the children race toward Amigo Suzuki’s hidden facility and destroy the konjaclone production's infrastructure. The fight pits Jackie’s samba against the villain's moves in a spectacle of resilience and unity. Courage and joy become weapons as the facility begins to crumble.

Inside, konjaclones crystallize under pressure as Shinchan's encouragement helps Jackie push through. The konjac clones dissolve, revealing Amigo Suzuki is actually a man posing as a Jackie clone, and that he is Jackie’s father in disguise. Fireworks erupt as Kasukabe returns to normal, celebrating freedom and dancing from the heart.