The team is called to a graveyard where two men have been sucked into a grave they were digging. Later, Hen finds out that her father, whom she hasn't seen since she was 9, is on life support and as next of kin she must decide whether or not to pull the plug on the machines keeping him alive. 

Maddie gets a call from a hiker in trouble. Buck and Eddie propel down the cliff and find human remains and a cell phone before they come across a hiker with a broken leg, who says he never called 911. 

Athena takes an interest in the case and with some help from the 911 department, she is able to ID the remains and visits the widow of the man who died on the trail. 

The team deals with rabid bats that invade a haunted house and then a horse that is dying after being spooked at an outdoor Halloween party. Due to the extent of his injuries, the horse has to be put down. 

Eddie wants to get Christopher into a new school, but they want to interview his estranged wife Shannon as well. Eddie reaches out to Shannon and the two have it out but eventually, reconcile after the interview. 

Hen makes the decision to forgive her father and then agrees to have the machines unplugged. 

Buck decides to break up with Abby and leave her apartment.