One Nation Under a Groove (blue thunder).A Secret appears in the Republic of Faisal Arabia, but on behalf of its own interests, the United States government forces Génération Bleu to not engage it. Ao's comrade Fleur reveals to him the reason why she hates her father Christophe is because Christophe chose to save her from dying from a car accident instead of his wife five years ago. Ao manages to cheer her up and both return with renewed spirits to battle when they are finally authorized to confront the enemy.