SpongeBob and Patrick are having fun at Jellyfish Fields . Patrick accidentally falls down a cliff and loses his head. SpongeBob mistakenly picks up a piece of Brain Coral and puts it in a big hole on Patrick's head.
Suddenly, the piece of Brain Coral gains him intelligence. Patrick seems to be interested in nature, work and almost any music when he is intelligent. He loses interest in all the things he and SpongeBob enjoyed, and actually has fun with Squidward and Sandy, until driving them both away with his patronizing attitude (he tells Squidward to find himself a new musical mentor and tells Sandy that she does not have the ability to solve "remedial" equations, causing Sandy to shout "I liked you better when you were a barnacle head!").
Since he is too hard even for them, Patrick wants to have fun with SpongeBob again. He tries many solutions to solve his problem, such as comparing himself with SpongeBob, meditating, doing research on Squidward, reading books about smarts, and even growing hair, but none of these things work.
Eventually he kidnaps SpongeBob and tries doing all the activities he used to do. When this doesn't work, he tries to redo his actions by falling off the cliff again. Patrick lets his body remain without a forehead (again), then SpongeBob puts on Patrick's original forehead, which makes him normal again.
•You're Nice - Sage Guyton, Jeremy Wakefield [title card] ‣Thrift Shop - Kapono Beamer [opening] ‣Dramatic Cue (b) - Ronald Hanmer [Patrick falls off cliff] ‣Drama Link (d) - Hubert Clifford ["Patrick!"] ‣Dramatic Cue (c) - Ronald Hanmer ["Let me help you out of there, buddy!"] ‣Steel Licks (a) - Jeremy Wakefield [Patrick missing the top part of his head] •Steel Licks - Jeremy Wakefield ["Here's your head."] ‣Maniac Pursuit - Trevor Duncan [gears turning in Patrick's head] ‣Period 4 - Richard John Cottle ["Look at them... these graceful, stoic creatures of the deep."] •Hawaiian Trax - Sage Guyton, Jeremy Wakefield ["Well, let's expand our jellyfish nets!"] ‣Room at Versailles - Norman John Warren [drawing of jellyfish] • ? - Nicolas Carr ["Okay..."] ‣Airs and Graces (a) - Paddy Kingsland [admiring the beauty of nature] •Gator - Steve Belfer [SpongeBob wants to play games] ‣ ? [SpongeBob laughs] ‣Hawaiian Link (b) - Richard Myhill ["What's wrong with Patrick?"] ‣Frankenstein's Niece A - Gregor F. Narholz [Patrick studying subspecies] • ? - Nicolas Carr, Barry Anthony [Squidward playing clarinet] ‣Wooden Bear - Gil Flat, Tony Tape, Florian Voelxen ["I'd recognize that piece anywhere!"] •Steel Sting - Jeremy Wakefield [clarinet mouthpiece covered in saliva] ‣Hawaiian Sting 6 - Sage Guyton, Jeremy Wakefield ["Now that you have some free time, let's get some grub."] ‣Romantic Ending - Harry Bluestone, Emil Cadkin ["We're just not compatible anymore."] ‣Hawaiian Cocktail - Richard Myhill [SpongeBob sad] ‣Steel Licks (d) - Jeremy Wakefield [Patrick at Sandy's house] ‣Say it with a Smile (a) and (e) - Dick Stephen Walter [math problems] ‣Kamakani B - Kapono Beamer [SpongeBob and Patrick looking at old photo albums] ‣They're Coming! - Trevor Duncan [Patrick trying to solve the problem] ‣ ? [Patrick meditating] ‣Steel Licks (b) - Jeremy Wakefield ["Coming."] ‣Dramatic Impact 3 - Ivor Slaney [Patrick kidnaps SpongeBob] •Spongebob Theme - Jeremy Wakefield, Sage Guyton ["Yay!"] ‣Surf's Up! A - Jerry Burnham, Wayne Cook ["Yes, let's have some fun."] ‣Surfer Baby A and D - Jerry Burnham ["Oh, yeah!"/"Oh, absolutely!"/riding down a hill] ‣Steel Licks (c) - Jeremy Wakefield ["When did the fun go away, SpongeBob?"] • ? - Nicolas Carr ["That's it!"] ‣Dramatic Cue (d) and (a) - Ronald Hanmer [Patrick falls off the cliff again/"Hold on, buddy!"] ‣Lumbering Giant - Paddy Kingsland [SpongeBob looking for Patrick's head] • ? - Jeremy Wakefield ["I guess we'll never have fun together again."] ‣Furtive Footsteps - Paddy Kingsland ["You said you found my dislodged cranial cap last time."] • ? - Nicolas Carr ["Brain coral!"] ‣Airs and Graces (a) - Paddy Kingsland ["Knowledge can never replace friendship."] ‣ ? [SpongeBob puts Patrick's old head back on] ‣Honolulu March - George de Fretes [ending]
In Greek this episode is called Πατρικ ο Εξυπνάκιας which means Patrick the Smart.
The episode is similar in plot to the novel Flowers for Algernon in which the protagonist gains intelligence quickly, but then wishes it gone because of the way others see him.
Squidward plays a song that Patrick identifies to be titled Cornelius Pufferfish's Opus 67 "Symphony in Blue" - a possible reference to a song of the same name on Kate Bush's album Lionheart. It could also be a reference to George Gershwin's Rhapsody in Blue.
The first thing Patrick says after having his brain connected is, "I find all this laughter highly illogical," a tribute to Spock's famous phrase on the original Star Trek series (which Paramount also produced).