Voltron: The Third Dimension is a sequel of the highly popular anime series from the 80's - Voltron: Defender of the Universe. This show is made and animated with 3d technique completely in America.
The show starts 5 years after Voltron Force's final battle against the invaders from Planet Doom led by evil King Zarkon, his son Lotor and which Hagar. Zarkon became an ally of the Galaxy Alliance, while Prince Lotor was taken to prison from which he escaped and once made an alliance with Hagar. Voltron Force is mobilized once more to put an end on Lotor's terror.