Park Jisung is an international spy. He works for a high up agency THATS non-governmental and underground: KQ Agencies. Zhong Chenle is the lead programmer on an app called Rainbow. The only flaw is: the company is gonna market when it's not ready for launch. The two meet each other, due to Chenle being an asset to the agency. But when Chenle gets kidnapped by the opposition, will they get to him in time? Hmmm.