三个骑士来自不同的时空来到一个世界，追击打机器怪兽。他们第七次见面互相怀疑，而不相信。之后他们三个才发现友情的力量。

Three knights came to the world from different planets and pursued the machine monster. They meet for seventh times, yet do not trust each other. Then they discover the power of friendship.