When Lee Jung-Soo regains consciousness, he finds himself trapped inside his car, which is buried under tons of concrete and debris.

Daekyung (Oh Dal-su), the rescue captain of the accident task force, makes various attempts to enter the tunnel, but the structure is only slow.

The sluggish rescue operation will eventually cause a major setback in the completion of the second tunnel nearby, and public opinion begins to divide over the survival and structure of the essence.

Director Kim Sung-hoon said in an interview, "It (sinking of MV Sewol) was such a big pain and the production team was also very sick."

"Since the sadness is still valid, I couldn't help but think of the sinking of MV Sewol when I made the disaster material film, but I thought it was impossible to exclude the memory and take it."

On the one hand, " one incident rather than focusing on pursuant to a huge disaster happened, and universal since the system should be run by him collapsed.

After the accident, she volunteers at the scene and talks with the rescue team leader to maintain the hope of Jeong-su, but the rescue operation is delayed than expected and she is baptized with raw eggs by the mother of the work leader who died in the accident.

[11] Frank Scheck of The Hollywood Reporter praised the film for its attraction and humor, as well as for its special effects and cinematography, writing "Infusing its nightmarish scenario with bracing doses of satirical humor, Tunnel is smarter and more sophisticated than most Hollywood attempts at the genre.

"[12] Gary Goldstein of the Los Angeles Times characterized the film as "vivid" and "relatable".

[13] Jay Weissberg of Variety praised the director, Kim Seong-hun, and the actors, and wrote "much of the film's appeal is that it tosses aside the monumental and focuses instead on character".

[15] Garry Garrison of The Playlist stated, "so, while at times it's easy to see the great film that 'Tunnel' could have been, that never stops it from being perfectly watchable thriller that it is.

"[16] Kim Yu-young of The Korea Herald praised the director and actors Ha Jung-woo, Bae Doona, and Oh Dal-su, describing them as "undeniable chemistry that is consistently palpable and carried well throughout the movie.

[18] The film was also reviewed by Jason Bechervaise of Screen Daily, and by Shim Sun-ah of Yonhap News Agency.