The governor asks McGarrett and Grover to serve a warrant to a young computer hacker (Nick Jonas) in order to protect national security.
McGarrett helps his mother with a covert op in hope of retrieving an incriminating microfiche; Kono runs into danger as she closes in on Adam's secret.
The ex-wife of the man who shot Danny reveals how Danny helped save her life; Tani and Junior are assigned to walk the beat as uniformed officers for the day; Adam is framed for the murder of the crime boss he has been tracking.