Watch Online Free on Watchseries. It's Halloween night in Radiator Springs, and Lightning and his best friend Mater are enjoying the festivities at the annual spooky block party. But when Lightning gets bored of the flavored gasoline, roasted lug nuts, and jack-cone-lanterns, he convinces Mater to check out the old haunted garage on the edge of town. Will the two friends be brave enough to make it through the night without getting spooked?