A North Korean spy, Lee Cheol Jin, is an operation staff against the South on an invaluable mission of ‘solution of food shortage in the North’. After arriving in Seoul, he takes a taxi to get the first contact with Mr. Oh, a veteran stationary spy in Seoul for 30 years. However, he is robbed of all his things by a quartet of burglars in the taxi and becomes penniless. Mr. Ohand Lee finally meet, and Lee tells him his story. Mr. Oh doubts of Lee’s quality, but he gets to know that Lee is a true spy from the North, who is sincere, simple and delicate.
Given time to them is only one week. Lee’s mission is to take genes of super pig developed in the South away and carry them to the North. In the meantime, Lee, having a bad impression on the South because of the robbery on his first day in Seoul, opens his mind by thoughtful care of warmhearted Hwa Yi, the daughter of Mr. Oh. Although Lee is ignored by Mr. Oh thanks to his stupidity from time to time, he never gives up his mission. Finally, Mr. Oh and Lee set to work after planning carefully.