Dr. Emma Collins and her team are spending their third summer on the island of Little Happy studying the effect of climate change on the great white sharks who come to the nearby nursery every year to give birth. Along with the last two inhabitants of this former fishing village, their peaceful life is disrupted when a "scientific" team led by her ex-boyfriend and marine biologist Richard show up looking for three bull sharks who we soon learn aren't just any bull sharks.
David Cuevas is a family man who works as a gangland tax collector for high ranking Los Angeles gang members. He makes collections across the city with his partner Creeper making sure people pay up or will see retaliation. An old threat returns to Los Angeles that puts everything David loves in harm’s way.
Battle-hardened O’Hara leads a lively mercenary team of soldiers on a daring mission: rescue hostages from their captors in remote Africa. But as the mission goes awry and the team is stranded, O’Hara’s squad must face a bloody, brutal encounter with a gang of rebels.
Yet to fulfill their rock and roll destiny, the now middle-aged best friends Bill and Ted set out on a new adventure when a visitor from the future warns them that only their song can save life as we know it. Along the way, they are helped by their daughters, a new batch of historical figures and a few music legends—to seek the song that will set their world right and bring harmony to the universe.