Nelson Rodriguez, a young Guatemalan boy, is kidnapped in broad daylight in Spanish Harlem by a man driving a black SUV. While investigating the violent disappearance, the team find a world dominated by illegal immigrants and the 'coyotes' who smuggle them over the border. The search is greatly hindered when hardly any witnesses come forward, for fear that they will be deported when they talk to the authorities. Even the boy's family are initially reluctant to report the disappearance. The squad speculate that a 'coyote' may be to blame for the kidnapping, but another theory emerges that suggests that the missing boy's desperate plan to save his family may have led him down an even darker path. Martin makes a mistake during the case that could have disastrous repercussions for himself and Vivian.