Over Christmas, J.D. and Dr. Cox work together on a tricky case. Meanwhile, Elliot manages an ER overflowing with patients and a surprising amount of holiday cheer.

When an overflowing ER sparks chaos within the hospital, J.D. is surprised to learn the reason why; Turk mentors Dashana in her personal life.

J.D. and Elliot reconnect while managing a difficult parenting conversation. Meanwhile, the interns grapple with work life balance.

This Halloween, J.D. helps a former colleague with a difficult patient, Elliot seeks support for her new clinic and Turk faces his family's growing pains.

Turk is determined to have a fun birthday with J.D. and Elliot. Meanwhile, the interns are challenged during the night shift. 

After uncovering a costly mistake made by Turk, J.D. must decide whether to report him or let it slide. Meanwhile, Elliot grows her responsibilities at Sacred Heart by leading a new initiative. 

J.D. reintroduces an old flame into Elliot's life, as his new relationship continues to blossom. Meanwhile, Turk tries a new approach to keeping the spark alive at home.

J.D. attempts an insurance workaround, creating tension with his new mentee. Meanwhile, Elliot tries to guide Tosh's specialty choices, and Turk flexes his own skills as a mentor. 

J.D. enlists Turk and Elliot to help with Dr. Cox's care. Meanwhile, Elliot finds an unexpected burst of confidence years in the making.