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.
Welcome to the Grand Dive Challenge.
أهلاً بكم في تحدّي الغوص العظيم
Willkommen zur Grand Dive Challenge!
Bienvenidos al Grand Dive Challenge.
Bienvenidos al Grand Dive Challenge.
Bienvenue au Grand Dive Challenge.
Benvenuti al Grand Dive Challenge!
Sejam bem-vindos
ao Grand Dive Challenge!
Добро пожаловать на «Большое погружение»!