 In the series opening, we get to know Caleb Temple losing his sister in an unexpected way, and then his father dying in prison being the prime suspect of his daughter s death. Lucas Buck, the all-around town sheriff steps up for Caleb s adoption, while Caleb runs away from his wannabe adopter. A long lost cousin returns to Trinity to help her kin, and the new town doctor starts to discover that the whole town is in a web with the sheriff in the center.