One night when Lani is driving near the mountainside, she finds a ghost-like glowing object. She told herself it's not the ghost but she couldn't hide her curiosity.
When Lani told the little buses that she saw a ghost-like glowing object, the little buses do not believe it at first. But little buses become scared when they visit the mountain together and see it. Then laster, when Peanut hears it, he wants to avoid night shifts. The little buses find the courage and together they chase the mountain ghost away.
But, will they send away the ghost? After all, is it the real ghost or is it just the ghost glowing object?