Dr. Danica Powell faces a career-ending crisis when she secretly treats Vince, a former Navy colleague and friend who saved her life when she lost her leg.
: The patient’s 16-year-old son suggests amputation to ensure his father's survival, but Dr. Park fights for a riskier surgery to save the arm, arguing that the father would want to keep working to support his son. Park successfully saves the arm.
While on a hike during their "babymoon," Shaun and Lea witness a hit-and-run. The victim is a stray dog that Lea names "Buddy." Despite the high costs and medical complications—including a spinal injury that threatens to leave the dog incontinent—Lea insists on saving him.
: Just as Shaun and Lea prepare to adopt Buddy, his original owners (who call him Cooper) arrive at the clinic to reclaim him. This experience serves as a "lesson in parenting" for the couple as they prepare for their own child. Dr. Powell’s Secret Surgery
: During the episode, Morgan reveals to Park that her embryo implantation failed. Park, in turn, shares his sadness over his son Kellan choosing to spend the holidays with friends rather than coming home.
Drs. Park, Reznick, and Andrews treat a father with a severe arm injury from a wood chipper accident.