Byeon Ok-hee receives a letter from Baek Ga, her husband, who is now in Jeju Prison. He invites her to visit him on "Family Visitation Day" with a few cryptic words. Their three children have their own struggles, so Ok-hee has to lure them with money. During their three-day journey, they gradually open their hearts to one another. Can they keep it together until the end of the trip?

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