A woman prepares for her remarriage to the perfect man, a second generation chaebol, but in the midst of those proceedings, she realizes that her divorce from her ex was never legally finalized. She has to lead a double life, leading both men on until things are settled. However, her ex-husband-to be is involved in an accident and develops amnesia, completely forgetting that they're no longer a married couple.
The Oh My Girl members, who were busy preparing for the comeback, get invited on a secret trip. Through the unexpected trip, viewers will be able to see the natural sides of the Oh My Girl members and their warm friendship as they experience healing and eat and play to their hearts’ content. All the content for “Oh My Girl Miracle Expedition” was filmed in UHD and will be a special treat as it shows Oh My Girl enjoying the snow and beautiful scenery of the Gangwon province in high quality.