Seiichi and Saria train under Artoria to become adventurers. During their training the three of them are teleported into a dungeon by a demon’s trap.

The dungeon they find themselves in the stronghold of the Black Dragon God, the strongest member of the Demon Lord’s Army. Artoria gets separated from Seiichi and Saria in the dungeon and the giant Black Dragon God appears before her. Then that overwhelming threat attacks! Can Seiichi and Saria save her in time?!
This is your final test, so show some spirit!
إنّه امتحانكما الأخير، لذا ابذلا ما لديكما
Das ist die letzte Prüfung,
darum strengt euch an.
Es la última prueba,
así que pónganle ganas.
Es la última prueba,
así que echadle ganas.
C’est la dernière épreuve,
alors du nerf !
È la vostra ultima prova,
Este é o último teste,
Это последняя проверка,