They say be careful what you wish for...

For Lydia, Jenny, and Selene, au pairing in Seoul is the opportunity of a lifetime. Lydia wants nothing more than to transform into a leading lady; Jenny is determined to swear off love for good 5,955 miles away from her ex; and Selene is convinced working in Korea will finally lead her to her biological mother.

During a combined family vacation with their host families, the women visit an enchanted waterfall on Jeju Island and make a wish under a full moon. Overnight, everything changes. Suddenly, Lydia is the girl everyone wants--except, strangely, her mysterious art class partner from Spain. Jenny is having secret, no-strings-attached fun with her host mom's irresistible younger brother. And Selene is finally getting somewhere in her search for her mother thanks to a research-savvy photographer.

But when Jenny's romantic feelings begin to deepen, she realizes her wish is standing in the way of true, lasting love. Her decision to return to the waterfall will have unexpected consequences and force the au pairs to confront the hardest question of all. Could it be that their friendship was the real magic all along?