This movie starts with Saze X playing basketball. Suddenly, a lightning bolt hit the earth. They walked towards it and found a boy. The boy's name is Ricky, and he thinks he has forgotten everything. On the other hand, Remy told Sazer-X that a giant monster named Mechanical Giant Bulgario had approached Earth and was destroying buildings. Sazer X still defeated the monster. But then something flashed into their eyes, and Takuto mistook it for a cosmic capsule. In fact, this is the Bosquito people that exist within Bulgaria, which Professor Horiguchi later explained.
成九保高中棒球部的女经理宫田秀吉(川口春奈饰演)因病住院。尽管她为一支数千年来一直处于联盟垫底的球队负责,但秀吉仍然不断想念她。由于受到了Yukichi的喜爱,他的老朋友川岛奈美(由前田俊彦饰演)临时担任了球队经理。
两个小家伙信以为真,正先恐后向魔神城进发,期间克林还为小悟空制造不少的麻烦。历经千辛万苦,他们终于来到了目的地。与此同时,布玛、乐平、普尔和乌龙来找武天老师玩,得知消息后也赶往魔神城寻找小悟空,途中却遭到恶魔们的袭击,布玛更被看似英俊实则凶残的恶魔城主路西法俘虏。 此时此刻,恶魔们正在进行一项邪恶的计划,小悟空他们能否拯救危机呢?