The movie description is incorrect. "Meanwhile, a man in his 40s is deeply affected by the loss of his beloved wife, Bai Li. Struggling to cope with his grief, He seeks solace in Wonderland. There, he requests a reunion with her, hoping to see her again once more and find peace." Are they referring to Gong Yoo's character? This is not what happens; Bai Li's story, which is central to the movie, is about her relationship with her daughter and her mother.
I thought the film was excellent and very moving.