Dong-Ki, Ho-Tae, and Je-Ha witness a boy, who commits suicide by jumping from an apartment, because he is obsessed by the entrance examination. After that, they plan to develop a learning machine in sleeping. They meet the president Kim of an electric company to raise money for manufacturing. They test the Kul-Kul Machine to Dong-Seok. His result of examination leaps from the last to the first, but his friends exclude him. Therefore, he rejects the learning machine in sleeping and insists to live humanly. Ho-Tae disputes with Dong-Ki and Je-Ha on the development of the Kul-Kul Machine. However, they make up with each other and hold hands for the bright tomorrow.