Ahn Soo-ji and Lee Jae-joon, who are oblivious to each other's real profession as secret agents, are in an ill-fated relationship. Three years later, they accidentally meet targeting the same enemy.
Former teen idol Nam Hyeon-soo is now in his thirties and working as a radio DJ. One day a young woman named Jeong-nam shows up and claims to be his own daughter. She also has a son whom she claims to be Hyeon-soo's grandson. Their relation is proven via DNA tests by Hyeon-soo's brother. This leads to Hyeon-soo attempting to avoid a scandal concerning him having children "unknown" to the media.
A lawyer is given the mission of revitalising a bankrupt zoo that has no animals. When he and a group of zookeepers come up with the idea to dress like animals and his fake polar bear goes viral, the zoo becomes a hit, before his law firm’s real intentions are revealed.
