El corazón del roble (2013)

Heroes come in all scales.

Something spooky is happening in Dragon Hill, and a sudden change in climate has plunged the land into a deep freeze. The fate of the forest rests in the hands of its protector, a little elf named Robin, and his misfit dragon companions. Together, the would-be adventurers must summon a team of guardians to uncover the mystery that threatens their home, and stop an evil dragon before it's too late.