The chief makes a decision that shocks everyone at Seattle Grace; Owen and Cristina attempt to find normalcy; April struggles in her new role; the 5th-year residents receive their first solo surgery assignments.
A series of murders hits close to home for Atwater when his brother might be involved. Meanwhile, Upton questions Ruzek's actions following an altercation with a suspect.
Director Vance's brother-in-law is the lead suspect when Gibbs and the NCIS team investigate the murder of a petty officer.
Unit Chief Jack Garrett and his international response team are called to Tanzania when a 23-member church group disappears.
Sam's alias places him in danger when he and Hidoko go undercover at a cryptocurrency farm that has been robbed of millions in Bitcoin codes.