Puzzle & Dragons X

Ace, a boy in Vienna City living an average life, finds a mysterious egg calling for his name. Little does he know that the egg is a special "Drop" that both Lance, the Dragon Caller, and the Special Drop Defensive Force are looking for.

Lance fights the Chaos Devil Dragon, but has a difficult time due to SDF's intervention. The special egg speaks to Ace, and Ace is able to create more Drops for Lance, leading to victory. Curious about everything, Ace goes to the Dragon Museum.

Tamazo, the special egg that hatched, gets kidnapped by the SDF. In order to rescue him, Ace and Charo sneaks inside the SDF base. After successfully rescuing Tamazo, Charo convinces Ace to go to Dragoza Island with him to become Dragon Callers together.

Ace, Tamazo, and Charo safely arrives on Dragoza Island. When he visits his grandmother, she gives him a D-Gear; a device used by Dragon Callers. Eager to try it out, Ace goes into the woods to find a monster that would become his ally.

Obtaining D-Gear and his first monster, Ouka, Ace wants to take the next step - getting his hands on a Soul Armor. Donny tells them that he can find one at the Sacred Temple, but warns that everyone who has set foot there have never returned.

Ace quickly takes another step forward in becoming a strong Dragon Caller as he welcomes another monster to his team. He builds his confidence from this, but, he may be biting off more than he could chew when he goes off to stop a Drop Impact himself.