Ruli and the gang are researching the paranormal sightings around the city when they stop to investigate a rumor about a haunted karaoke box. It’s said that if a certain song is sung, a mysterious and creepy voice begins to sing along with you.
I guess songs make people happy.
أعتقد أنّ الأغاني تُسعد النّاس
Lieder machen Menschen glücklich.
Las canciones hacen felices
a las personas.
Las canciones hacen felices
a las personas.
Credo che il punto sia che il canto
rende felici le persone.
Músicas fazem as pessoas 
ficarem felizes, não é?
Я считаю, что песни должны радовать.