Their upcoming film unveiled a still cut of the actors laughing and splashing with each other in the pool. 'No Breathing' is a youth sports movie that tells the story of love and rivalry among competitive swimmers. 

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Lee Jong Suk will play the role of Woo Sang, who is an ambitious, young swimmer chasing a big future ahead of him and always striving to be #1. Meanwhile, Seo In Guk will make his film debut as Won Il, a swimming prodigy who avoids swimming until the day he decides to return to the sport.

'No Breathing' is set to be released in theaters late 2013.