After being wounded in a gunfight prompted by the reopening of an old murder case, Detective Lake escapes from the hospital and takes a witness from the original case hostage.
Frank is taken by surprise during an on-air interview; Danny and his new boss clash as they investigate a drive-by shooing.
After a teenage girl makes a rape accusation against a person with a criminal record, but little evidence is found, the girl's father takes matters into his own hands.
Dr Halstead resuscitates a patient with stage four cancer despite the family's objections. Meanwhile, the nurses work on improving patient satisfaction.
Rhodes and Choi are at odds after a patient makes a tough choice about their heart condition. Halstead deals with his lawsuit.