On his way to the hospital, Mc Garrett breaks out of the ambulance and escapes.
Kono Kalakaua (Grace Park) is suspended from HPD, but assists Chin Ho Kelly (Daniel Dae Kim) by following one of Wo Fat's men with the hopes of incriminating him.
The second season introduces a new governor, Sam Denning, after the murder of his predecessor, Patricia Jameson.
The season includes two more main cast members, Masi Oka, who recurred in the first season, and Lauren German, who departed after episode 16.Alex O'Loughlin appears briefly in episode 20 and does not appear in episode 21 as he was seeking drug treatment for pain management medication during the production of those two episodes.She finds Wo Fat meeting with a weapons buyer, Kurt Hauff, in the docks, but is caught.Meanwhile, Mc Garrett seeks shelter in Max Bergman's (Masi Oka) home.One week after Steve Mc Garrett (Alex O'Loughlin) is arrested for Governor Jameson's murder, Danny (Scott Caan) brings in Joe White (Terry O'Quinn), Mc Garrett's mentor, to help clear him.
Victor Hesse (James Marsters), who was ordered by Wo Fat (Mark Dacascos) to kill Mc Garrett, instead aids in his escape by stabbing him.