and compared the film unfavorably to Inception. In a review for the Yonhap News Agency titled "Unsalvageable mediocrity," critic Sun-ah Shim wrote, "At face value...it could have been an engaging film, replete with drama, action and paternal love. Instead, it is a mediocre fare that makes for tedious viewing with a distinct lack of suspense." Shim thought, "The film crumbles mainly because of its wholly predictable and loose plot," adding that it, "recycles parts of dramatic devices from Hollywood blockbuster 'Inception'." Shim also disapproved of Park Yoo-chun's performance and believed that the film gave hints about its central mystery too early. In addition, like Jin, he thought the twist was forced. However, Shim gave positive nods towards the film's visual effects and Go Soo's performance. References External links Lucid Dream at Naver Movies 2017 films 2010s Korean-language films South Korean science fiction thriller films South Korean mystery thriller films 2010s science fiction thriller films 2010s mystery thriller films Next Entertainment World films 2010s South Korean films