Gawat! Kali ini George dan Harold benar-benar kena batunya. Mereka membuat si otak encer yang lagi ingusan marah besar dan dendam pada mereka. Tapi waktu Melvin si otak encer mencoba mengubah diri menjadi superboy bionik, ia malah menjelma jadi cowok upil bionik! Sanggupkah Kapten Kolor tidak seluruh dunia terancam bakal tenggelam karena tetesan ingus yang menjijikkan! Kemarikan tisunya, tolong!
When we last saw George and Harold, they were headed to jail for the rest of their lives. What could be worse? How about being pulled from prison by a time-traveling tyrant named Tippy Tinkletrousers! Now the boys are taking a trip back in time to the carefree days of kindergarten, when the scariest thing they had to face was not evil mad scientists or alien cafeteria ladies but a sixth-grad…