This beautiful fusion of fantasy, romance and mystery engages both the heart and mind. To best appreciate it, one needs to closely follow the captivating adventure set out by the writer. Thus, skipping parts of it is strongly discouraged - you might as well not watch it.

Those who love this drama are fully aware that a story about parallel universes and time travel is not everyone's cup of tea. It is totally understandable for somebody who is not into fantasy to not like it. Excuses like a messy story and too many product placements are not necessary to explain one's inability to appreciate it. What is hard to understand is why some people feel the need to bash it. When I don't like a TV series, I simply stop watching it, not go on and on about why I don't like it. So it's really intriguing why viewers who don't like this drama refuse to leave it alone, keeping on bashing it instead. Is it some defense mechanism? Perhaps this drama made them question whether they're as smart or imaginative as they think they are? Perhaps it made them wonder whether their inability to focus on the story and ignore product placements denotes short attention span? Perhaps they wonder whether not seeing the chemistry between the leads denotes their inability to separate the actors from the characters, in turn denoting their inability to fully immerse themselves in the drama, in turn denoting short attention span?

In any case, many viewers around the world relished this drama and consider it a masterpiece.

Story:
Lee Gon, the eight-year old crown prince of the Kingdom of Corea, witnessed the assassination of his father at the hands of his illegitimate uncle, Lee Lim, who was after a magic flute named Manpasikjeok. After Lee Gon cut the flute in half, Lee Lim tried to strangle him but he was saved by a masked stranger who left an ID card before disappearing. Lee Lim escaped to an alternate world, the Republic of Korea, through his half of the flute. The orphaned Lee Gon grew up to be a wise, intelligent and benevolent king under the care of his dad's cousin, Prince Buyeong, and Head Court Lady Noh. He took comfort in the ID card of Lieutenant Jeong Tae-eul of the National Police Agency left by his savior. For 25 years, he searched for his savior unsuccessfully until one time when, astride his white horse Maximus, he chased a mysterious stranger through the bamboo forest and came across the portal to Korea.

The first person he encountered in the alternate world was police officer Jeong Tae-eul. Utterly happy at finally meeting the owner of the ID that had been his companion for the last 25 years, he hugged her upon meeting her. But, being a no-nonsense and feisty detective, she doubted his claims of being a king in an alternate universe, promptly jailing and investigating him. Their encounters, with him openly declaring his affection for her any chance he got and her slowly warming up to him even while doubting what she thought were delusions of a crazy weirdo, were delightful and heart-tugging. Even when they were bickering, it was obvious they were perfectly matched in personality, intelligence, humor and values. For a fantasy film, the romance was surprisingly realistic. Lee Gon and Tae-eul were both honest about their feelings for each other. Embracing their fate, they didn't toy with each other's affection. While showing the world their strength and bravery, they were not afraid to expose their vulnerable sides to each other. They deeply loved each other, with him willing to open all the doors of the universe to look for her, and her willing to wait until he succeeded. But they were both selfless enough not to let their love rule over peace and balance in the universe.

Lee Gon and Tae-eul could not bask in each other's love as the world was unraveling from the effects of the broken Manpasikjeok. Lee Lim had already killed his and Lee Gon's doppelgangers in the alternate world. He had also been smuggling people between worlds to plant spies in the palace among other reasons, making people kill their doppelgangers in the process. Furthermore, when the portal between the alternate worlds was crossed, time froze, with the duration of time freeze increasing such that there would come a time when both worlds would freeze forever. The solution was to make the Manpasikjeok whole again and to close the doors between the alternate worlds. How Lee Gon accomplished this with the help of Tae-eul, Jo Yeong, Eun-sup, Sin-jae and other allies was as compelling as it was brilliant.

Acting/Cast:
Lee Min Ho's regal bearing and facial and vocal expressions ably brought Lee Gon to life. He successfully portrayed the decisiveness of a strong and wise leader, the brilliance of a man of science, the gentleness of a loving foster son to both Prince Buyeong and Lady Noh, the playfulness of a friend to his Unbreakable Swords and the vulnerability of a man in love. Kim Go Eun's versatility was on full display with her spot-on portrayal of different characters. She clearly showed why Tae-eul was the most suitable partner for Lee Gon. Her honesty and drive to do the right thing were what Lee Gon needed in a life tainted by betrayal. She made us believe in a character who decided to be brave because not everyone could be. She made us hope that seeds from Corea would grow in the inter-dimensional gate and the alternate world just as she hoped she could fire a gun in an environment with no air, wind and light. The supporting cast was excellent with special mention to those who portrayed Jo Yeong, Eun-sup, Lee Lim, Seo-ryeong, Shin-jae, Prince Buyeong, Lady Noh and Secretary Mo.

Music:
From the initial strains of the opening credit to other exquisite background music like "Parallel World", "Fantasia of Another Dimension", "Empire" and "Into the Fantasy", the soundtrack of TKEM transports viewers to a wonderland. The haunting melody of "Maze" with the lyrics "born to be walking alone" gives a glimpse of the lonely world of an orphan who wore the crown. At the same time, the lyrics "light that I chased is you" conveys what he felt about the person whose ID kept him from being sad and lonely while he was growing up. The song "I Just Want To Stay With You" expresses his desire to be with the person who had been his beacon of hope for the last 25 years. The sublime "If Only/My Love and..." background music played at the end of episode 3 made us realize that Tae-eul missed the deluded weirdo who forced her to keep his horse in her yard and that Lee Gon's heart was breaking at having to leave her to go back to his world. The soaring notes of "My Love" make us feel the power of a love that could last forever even when the object of affection had frozen. "You're My End and My Beginning" makes us believe in somebody who would do anything for a loved one.

Rewatch Value:
I have re-watched this masterpiece several times. Each time, I either become more emotional or notice something I have not noticed before. For example, the third time I watched the scene where Lee Gon and Tae-eul were in the hospital quietly looking at each other, I was struck at their painful submission to their fate as they were trying to savor each other's presence and committing each other's features to memory knowing they would likely not see each other again. It was heartbreaking, making me cry now just thinking about it.