Hiroto and Kazami have made a small but very important improvement in their relationship. However, the Build Divers and the Resistance are now overwhelmed by the attack of the mysterious Gunpla known as "Seltsam." The pendant that Muran entrusted to Hiroto and the others seems to become a key to turn the tide, but… Meanwhile, May begins gathering intelligence at Magee's bar.
Submerged 500 meters
in the Grand Dive Pool
غائرة تحت مسبح الغوص العظيم بـ500 متر
500 Meter tief versunken
in diesem Grand Dive Pool
Al fondo de esta piscina de 500 metros
de profundidad hay Haros.
Al fondo de esta piscina de 500 metros
de profundidad hay Haros.
À 500 m de profondeur
dans notre piscine Grand Dive,
In un punto a 500 metri di profondità 
in questa piscina, la Grand Dive Pool,
Submersos a 500 metros
na Grand Dive Pool,
В этом большом бассейне на глубине
пятисот метров наша цель, Харо.