Lance, a top class Dragon Caller, and his Tamadra Devi, appear in Vienna City chasing what appears to be a meteorite. The Ace, Rena's son, hears a voice calling him by name several times, and finding an egg with a star shape on it, he brings it home. A monster starts attacking the city, affected by Drop Impact, and Lance tries to stop it using his monsters, while an Devi teaches an agitated Ace about. During the battle, Ace is able to help Lance by drawing water Drops by listening to the egg, when Lance is unable to to draw them out himself.
Lance manages to calm down the monster, but the SDF choose the same moment to start attacking it - which enrages the monster again. Lance continues fighting and as Ace is feeling desperate, the egg, almost hatching, encourages his again to get the Drops, using which, the monster is finally dispersed. The egg hatches into a white Tamadra called Tamazo.