In the cold, dark waters off North Korea a U.S. Navy fast attack submarine meets with a mysterious disaster - it's attacked and nearly sunk by an ominous stealth submarine resulting in the deaths of the Executive Officer and the Engineering Officer.

With his wife Elizabeth on life support after a boating accident, Hawaiian land baron Matt King takes his daughters on a trip from Oahu to Kauai to confront a young real estate broker, who was having an affair with Elizabeth before her misfortune.

When mankind beams a radio signal into space, a reply comes from ‘Planet G’, in the form of several alien crafts that splash down in the waters off Hawaii. Lieutenant Alex Hopper is a weapons officer assigned to the USS John Paul Jones, part of an international naval coalition which becomes the world's last hope for survival as they engage the hostile alien force of unimaginable strength. While taking on the invaders, Hopper must also try to live up to the potential that his brother, and his fiancée's father—an Admiral—expect of him.

Lily, a young doctor, wakes up from a car accident and discovers she is living a completely different life. Now married to her boyfriend’s rival, Dr. Mitch Kayne, and a mother to a 5-year-old son, she has an established life she remembers nothing about. Everyone around her denies that her boyfriend Neil ever existed. As Lily begins to doubt her own sanity, memories of Neil resurface, causing her to encounter unexplainable incidents. While desperately searching for the truth of her past life, she questions her entire existence; but in the end, she discovers the meaning of true love.

A bonded courier transports a bratty teenager on an international flight, but realizes a trap has been set up for them when they reach the U.S.