A teen idol, Yui Saikawa, enlists Kimizuka and Natsunagi--who has taken up the mantle of legendary detective--to guard a priceless sapphire. In preparing for this, the two realize that more than just a precious jewel is at risk.
♬ I'm leaving behind the train
that stops at every station ♬
♬ سأترك خلفي القطار الذي يتوقف عند كل محطة ♬
Die Bummelbahn ignorier ich nur für dich!
♬ Dejo atrás al tren que se detiene
en cada estación ♬
Le train local
ne le rattrapera jamais !
Vou deixar para trás o trem
Que para em todas as estações