It's Yuna's 18th birthday! But there's no time to celebrate, as the Petrification Evil Monster Gargorgon is resurrected from the depths of antiquity. As the monster closes in, a mysterious yellow fighter jet appears. And at long last, President Shizuma's past, and the hidden secret behind Yuna's birth are finally revealed!

The discovery of a stone tablet reveals new long hidden information. But meanwhile, the evil clutches of Darrgon close in around Yuna! Kengo and Akito rush in to save the day, but Darrgon is not quite his usual self... You can't be serious! Darrgon has fallen in love with Yuna!?

The blue beast god, Bali Gailer, has arrived from space under Yuna, who has awakened the power of Yuzare! It seems that there was a connection with Yuzare long ago, but what is the purpose? ?? Dangerous! Yuna is targeted! Can Kengo and Akito save Yuna? ??

Two capsules from 350 million years ago; they’re even older than the 30 million Ultra-Ancient civilization?! Barriguiler’s lightning attack hits them, and causes the red and blue devils sealed within to be revived! Kengo and Ignis join together to defeat the two giant monsters!

Suddenly Ignis grabs Yuna and leaves… for some great plan, he opens the door to the Eternity Core. Despite the many obstacles appearing in front of them, Kengo and his friends trust in Ignis’ plan and wait for the pair to return. Can Ignis and Yuna get back to the others?! And what trials await to test the trust between them?!