A catastrophe happens on the day before Emilie's and Jacobs divorce: their son Toby falls into a hidden well while playing in the woods - the "woods of lost souls", as legend calls it.
Firefighter Mike - Emilie's childhood love - tries to rescue Toby. But what seems simple at first turns out to be impossible, Toby is trapped in the deep well and after a fierce rainfall the water rises higher and higher, threatening to drown him. Time is mercilessly running out!
In spite of this life-threatening situation, Jacob and Mike can't hide their contempt for each other, they clash repeatedly. After intensive research Jacob discovers an old tunnel system dating back more than 100 years, which seems to link up with the well. For the first time the two men must leave their mutual contempt behind and work together as a team to rescue the injured boy. Just when the rescue operation seems to be successful, a dark harrowing secret from the past is tragically unveiled.