Following the abduction of a former NSA cyberterrorism expert, the team must rescue the man and prevent a breach of national security.

An escalating gang war spills into the stands of a high-school football game, killing several people; an unlikely partnership arises.

A violent convict escapes from prison and kidnaps a young couple on vacation; McGarrett's estranged sister comes to town.

When the daughter of the U.S. ambassador to the Philippines is found dead, the governor tasks Five-0 with finding her abducted sister.

When the CEO of a successful surf company is murdered, Kono revisits her past; Five-0 is thrown into the varied but interconnected worlds of North Shore surfing.

When a Navy SEAL, who's on the run for a murder he swears he didn't commit, takes hostages and safe haven aboard the U.S.S. Missouri memorial battleship, McGarrett must use every SEAL skill in his arsenal to diffuse the situation.

When Danny's ex-partner is found dead at a Hawaiian luau the Five-0 team's investigation leads them to some dirty cops and a powerful cocaine cartel.

When a member of the security detail for an upcoming Aid Summit is murdered before he can reveal the details of an assassination plot, Five-0 is brought in to investigate the murder and protect the target, a ruthless dictator.

Five-0 is baffled when a highly skilled ring of thieves pulls off a heist of an armored car, killing two security guards but leaving the money behind. Their only lead in the case requires Danny to reluctantly ask his ex-wife for a favor.