Mermaid Man and Barnacle Boy decide to have lunch at the Krusty Krab. Learning this, Spongebob becomes overexcited and runs for an autograph, prompting the heroes to flee in fear and in the process, Mermaid Man drops his utility belt, which includes many features including a shrinking button, which Spongebob inadvertantly uses to shrink everyone in Bikini Bottom./Spongebob is in the process of failing his driving exam (yet again), and while they plunge off an unfinished bridge, Mrs. Puff imagines many outcomes of the event, one of which is going to jail.
可惜角色塑造流于表面，过于脸谱化，好人一味善良、坏人纯然邪恶，缺失深度挖掘，难以给人留下深刻印象。
情节老套是这部影片硬伤，观影不久便能猜中后续走向，如同嚼蜡般缺乏惊喜，难以勾起深入探究欲望。
部分情节的发展较为平淡无奇，但整体上并不影响观影感受。
观影全程如坐针毡，冗长拖沓、乏味剧情，加上糟糕视觉听觉呈现，既无娱乐价值，更谈不上艺术熏陶。
特效制作水平低下，画面模糊不清，严重影响了观影体验。