In the ultimate test of marriage, an agent-turned-househusband gets tangled in a perilous mission with his detective wife, who’s clueless about his past.

Seo-joon, loses everything to voice phishing and infiltrates a organization in China to meet Kwak Pro, the designer behind this phishing system.

A group of unlikely heroes from across the Korean peninsula try to save the day after a volcano erupts on the mythical and majestic Baekdu Mountain.