Noh In-ji receives her next field wife assignment. Han Jeong-won struggles with his separation from ex-wife Lee Seo-yeon and an impending second marriage.
Noh In-ji, an employee at NM, finds herself deeply alone despite her job of living with a 'contract husband' every year. Meanwhile, Han Jeong-won enters into this contract marriage in an ironic attempt to preserve his previous marriage.
The secret marriage service is uncovered when a trunk washes up on the shore, revealing the strange marriage between the couple in the thick of it all.
The Trunk - Season 1, Episode 1 Synopsis and Schedule