Decibel

“It will explode if it exceeds 100db.”

A bomb has been planted that responds to sound, and nobody can say who set it or what it wants. Kang Do-young (Kim Rae-won), a former Naval officer with a dark past, is pulled back in to face the insurgent behind it, with Jeon Tae-sung (Lee Jong-suk) in the middle of the trouble. Hwang In-ho builds the film on the plain idea that the loudest thing around you can be the thing that kills you.