SEASON 1: Steve McGarrett returns home to Oahu in order to find his father's killer. The governor offers him the chance to run his own task force (Five-O). Steve's team is joined by Chin Ho Kelly Danny "Danno" Williams and Kono Kalakaua.
SEASON 2: New crimes, new criminals and new corruption confront the elite federalised task force known as Hawaii Five-0 in the action-packed series featuring the rugged enforcement team whose mission is to wipe out the crime that washes up on the islands sun-drenched beaches. Season Two starts with a stunner - Detective Steve McGarrett (Alex OLoughlin) finds himself behind bars, accused of murdering the Governor. The action accelerates with new leads in the killing of McGarrett's father. And things go from hot to explosive in cases that include Kono (Grace Park) being suspended from the force, the arrest of Chin Ho (Daniel Dae Kim) at the Russian consulate and the kidnapping of Danno's (Scott Caan) young daughter in a bizarre revenge plot.
SEASON 3: The Hawaii Five-0 team is back in action in a season packed with more thrills, chases and unexpected turns than ever before. The Third Season begins with the shocking return of Detective Steve McGarrett's mother, who harbours secrets that could endanger everyone she loves. Meanwhile, the team continues to fight crime and corruption on the islands, while struggling to keep their personal lives intact. Kono continues her relationship with the son of a Yakuza boss; Chin Ho deals with a devastating personal loss and the repercussions of his past; and Danny must fight to keep his daughter in Hawaii.
SEASON 4: The Hawaii Five-0 team faces some of their biggest challenges yet as they fight to keep paradise safe from the most dangerous criminals on the islands. This season, Steve McGarrett and Detective Danny "Danno" Williams pursue an expert hacker and are taken hostage by an escaped convict who convinces them of his innocence while the danger of Kono's relationship with the son of a Yakuza boss escalates. Chin Ho is investigated by Internal Affairs about his ties to the head of a drug cartel, and Catherine (Michelle Borth) gains a spot on the team but must repay a debt of honour in Afghanistan. Joining the team this season is Captain Lou Grover, who recently moved his family from Chicago to head the SWAT unit on the island.
SEASON 5: Led by Steve McGarrett and Danny "Danno" Williams, the Hawaii Five-0 team faces some of the most terrifying criminals ever as they fight to enforce law and order in paradise. With his kidnapped brother's life on the line, Danny scrambles to get the money to save him and Chin Ho Kelly puts his own career on the line to help; Steve meets a woman who helps him reopen his late father's last unsolved case; Kono Kalakaua and Chin are taken hostage while undercover in the black market world of priceless art; Steve is kidnapped by Wo Fat; and, in the aftermath of his daughter's kidnapping, Lou Grover becomes more accepting of the team's less-than-upstanding tactics to keep the islands safe.
SEASON 6: The heats on as the Hawaii Five-0 team takes on some of the Aloha States most notorious and baffling criminal cases involving murder, the Mob, espionage, and kidnapping. With McGarrett and Danny at the helm, the team interrogates members of a renegade stunt-bikers gang, pursues a rogue Russian spy with access to NSA secrets, and partners with an autistic child in a murder investigation. Chin and Kono are held at gunpoint by two killers who don't know they're cops, and Grover (Chi McBride) and his family are haunted by a 15-year-old Mob investigation. Meanwhile, Catherine (Michelle Borth) returns to the islands and McGarrett prepares to take their relationship to the next level.
SEASON 7: As Steve McGarrett and Danny Williams recover from their transplant, a vigilante begins killing serial killers and leaves their bodies on Five-0 property with ivory chess pieces in their mouths: the first is found inside Five-0 Headquarters at Iolani Palace, and the second is found inside Lou Grover's (Chi McBride) car. As Five-0 searches for the killer, Steve must help the new governor, Mahoe (Rosalind Chao) quell the fear that Oahu is no longer safe. Jerry Ortega (Jorge Garcia) discovers the killer is a recent parolee who stole the chess pieces eight years previously.