Kalam is the cleverest little boy in his school, perhaps even his town, Rameswaram. He is annoyingly curious, full of crazy ideas and up to mad inventions. Everyone around him and all his classmates think he is bonkers, weird and best avoided – all except for his dad, two best friends and Professor Ramachandran, the science teacher in whose little laboratory he tests out all his inventions. But when the school’s most horrid teacher, Punnakai, spreads lies about the professor’s experiments and plots to throw Kalam out for his latest creation, the two have to find a way to fight back.