![Centigrade](https://image.tmdb.org/t/p/w185/hTFs6T2k0kdQHFcC4gisT0UtNX8.jpg)
When teacher Randall Thomasson is killed during a carjacking, an unexpected visitor shows up at his funeral – his estranged brother, Karl Thomasson. An ex-Green Beret turned mercenary, Karl signs on as a new substitute teacher in order to investigate Randall’s murder.