
CBS books a new version of the classic "Hawaii Five-0" series, with Alex O'Loughlin in the lead role as Detective Steve McGarrett and Scott Caan portraying Danno. The detectives are part of an elite task force whose mission is to eliminate crime on the beaches of the Aloha State. Assisting McGarrett and Danno are Capt. Lou Grover, who formerly headed Hawaii's SWAT unit; Jerry Ortega, the islands' local conspiracy theorist; and Tani Rey, a bold, recent police academy graduate. The brash unit spar and jest among themselves but remain determined to eliminate the seedy elements from the nation's 50th state.

When Grover's niece goes missing from the police academy, it's discovered that her boyfriend is an undercover member of the yakuza.

On Valentine's Day, Tani and Noelani are held hostage during a convenience store robbery; the team investigates the murder of a Thai diplomat whose wife confesses to the crime, but Danny suspects she's covering for the real killer.

Catherine informs Five-0 that McGarrett's mother has been captured and is in danger of being executed for trying to free Wo Fat's imprisoned father; Chin is unable to delay Sara's adoption.

While Danny chaperones Grace's high school dance, the venue is seized by terrorists, who hold everyone hostage with the intent of abducting a diplomat's son; Danny and Grover discover that Will is Grace's secret boyfriend.