Heybot! Episode 8: Decisive Battle! Groovy-Groovy Island!
Episode 8 of 50 of Heybot!, aired November 12, 2016, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Heybot and Nejiru awaken to the sounds of samba music, and find the people of the town engaged in a mad dance. Everyone, from the maids to the king, is acting strangely! It turns out it all started when the king`s old rival Norio arrived to steal back the Groovy-Groovy Screw. To save his father and all the people of the town, Nejiru and Heybot must venture Groovy-Groovy Island to get it back! Source: crunchyroll