Late at night, terrorists kidnap research chemist Jackson McKay and his daughter and take them to the Idaho mountains. Jackson's captors demand he turn over his research files on a chemical compound that can create a devastatingly lethal chemical weapon– or else his daughter will die. Desperate for a way to save his daughter and also protect his country from the terrorists, Jackson makes a daring escape, setting in motion a deadly game of cat and mouse.

Arriving at the scene of a wildfire, smokejumper Lauren Michaels and her crew are caught in the crossfire of Jackson's nightmare. When her fellow smokejumpers fall victim to the terrorists' savagery, Lauren must help Jackson save his daughter and send rescue teams for her surviving friends.

Pursued by a sniper, Jackson and Lauren embark on a treacherous journey off the burning mountain. But they soon find more than their lives at risk, because the unexpected heat that flares between them may cost them their hearts...