“Some lives we save. One life saves us back.”

Plot: After a fragile ceasefire, Captain Han Joon-seo (Lee Min-ho), commander of an elite peacekeeping team, crosses paths with Dr. Kang Mo-yeon (Song Hye-kyo) once again when a super typhoon devastates an island nation and a leak from a secret bio-research lab forces the country into lockdown. The trailer alternates between kindness and chaos: a field hospital lit only by headlamps; wind from a helicopter whips up prayer flags; a collapsed hotel turns into a maze of ambulances; black marketeers exploiting vaccines to gain power; and a border confrontation where body heat exposes a hiding child.

Heartbeats become the soundtrack as aftershocks overwhelm communications systems and evacuation windows shrink by the minute, forcing them to choose—obey orders or tear them down to save civilians and each other. Glimpses of rooftop reunions, suspense over an engagement ring, and a convoy of vehicles racing through a flooded levee amid heightened tension suggest a melding of duty and love.

Verdict: Broad, paced, and tender in all the right places—the action is grounded, the moral stakes are compelling, and the chemistry shines through even in the darkness. If the season manages to balance heart and danger as the trailer promises, get ready to be “destroyed” in the most beautiful way.