The team races to rescue a young hacker, who reminds Harry of his past self, being forced to hack for criminals. Meanwhile, Dante is back in town to visit his father and Mel makes a breakthrough in therapy.
A gang killing leads Carlos to new information on his father's murder. TK contemplates a major life decision as Owen is determined to get Austin's first responders' health care coverages increased.
The family's dream of climbing Mount Everest turns into a nightmare when Stan tries to save a buck and takes them to a different, much cheaper mountain.
Goodwin's troubles persist. Charles clashes with his former resident over a depressed patient. Lenox and Ripley treat a car accident victim who recently reunited with his college sweetheart.
Herrmann and Mouch prepare to take their officer exams. Cruz receives a chilling omen. Carver takes care of a dog after its owner is injured on a call.
In the midst of a deadly heat wave, the team at Grey Sloan struggles to keep up with an overwhelming amount of patients. Amelia and Winston face a challenging surgery, while Jo and Lucas run an errand for the hospital that takes an unexpected turn.