A trio of young Naval Academy recruits get together while studying the finer points of deep-sea diving as part of their curriculum. Kim Jun (Shin Hyeon-jun) is the talkative one of the bunch, he's social and easy to get along with and a perfectly friendly guy. Lee Tae-yon (Kim Yeong-ho) is Kim Jun's closest friend, though personality wise, they're very different as Lee Tae-yon tends to be on the quiet and more contemplative side most of the time. The two young men have known each other a long time and have developed a close friendship over the years.

The third cadet is the lovely Kang Su-jin (Shin Eun-gyeong). She's a pretty young thing and Kim Jun and Lee Tai-yon both seem to take a pretty much instantaneous liking to her. She's a nice enough girl, but she's very driven and more than a little ambitious. These qualities make her a little aggressive at times, but she seems to have a romantic interest in Kim Jun. When Kim Jun wises up and figures out that Lee Tae-yon has had his eyes on Kang Su-jin all along, he breaks off contact with her so that Lee Tae-yon can move in, but it's all for naught soon enough as she gets shipped off to duty in the United Kingdom.

As the days go on, Kim Jun and Lee Tai-yon make a move to the salvage unit of the diving program. This is quite an honor for them as this is one of the most respected divisions of the department and when they show up to start their specific training program, who should show up as their instructor but Kang Su-jin? To complicate matters further for the three of them, Lieutenant Colonel Choi Hyong-su (Lee Il-jae), has no qualms about sending all three of them out on an important and dangerous job – to rescue the stranded crew of a submarine that has gotten stuck on the bottom of the ocean floor.

While the movie takes a little while to get going, once it picks up Blue is a pretty interesting movie. The characters are well defined and quite realistic, and we're given enough background information on them that we care about them and feel for them and understand the dire straits that they're put into. While the movie underplays the adventure/thriller aspect of the storyline a little too much for its own good, the film is never dull thanks to the three lead performers, all of whom put in pretty solid efforts. Certain smaller aspects of the storyline a bit cliché ridden and things do tend towards the melodramatic a couple of times but the performers do a very good job with the material which makes it quite palatable even when sometimes maybe it shouldn't go down as easily as it does.

From a visual standpoint, there are a few moments where the film looks a little on the low budget side, but for the most part the cinematography and special effects work is quite good. A few of the scenes where CGI is used take a bit of a hit, but thankfully there aren't too many of these and the computer generated effects don't detract too much from the atmosphere or the storyline.

Ultimately the film doesn't break any new ground but it provides some nice moments of excitement, an interesting premise and some very good acting. Fans of military or undersea drama will likely really enjoy what Blue has to offer.

Video:

Tai Seng's 1.85.1 anamorphic widescreen transfer is quite nice. Some sections are a little dark but this looks to be a stylistic choice on the part of the director and the cinematographer, and not so much a fault of the actual disc itself and even during these moments you won't have a problem following the on screen action. There aren't any problems with compression artifacts, the image is strong and clean from start to finish, and print damage is not an issue either. Some mild edge enhancement is noticeable as is some line shimmering along the edges of the buildings and vehicles in the movie from time to time but other than that, this is quite a solid presentation. Skin tones look lifelike and natural, color reproduction is good, black levels are strong and stable, and aside from the aforementioned darker scenes, there's a pretty strong level of both foreground and background detail in the picture.