TRIGGER goes missing when they're scheduled to perform at the Tokyo International Music Art Festival, so IDOLiSH7 and Re:vale work together to look for them. Ryunosuke is rescued sooner than the others thanks to Nagi's quick wits and rushes to Zero Arena, but...
(Headbutts are effective when your 
arms are bound to your body.)
النّطحة تكون فعّالة عندما تكون ذِراعك)
(مغلولتين إلى جسدك
Met schlongen Ärme wöre
Koppnösse en Möchlischkeit.
(Le testate sono efficaci
quando le braccia sono legate al corpo.)
(As cabeçadas são eficazes quando
os braços estão presos ao corpo.)
Когда руки связаны с телом,
помогает удар головой.