With a bitter taste in the mouth, knowing that the Sharknado crisis is far from over yet, Fin and April travel to London after the events of Sharknado 4: The 4th Awakens (2016), as Nova Clarke's fact-finding expedition accidentally triggers a wave of ferocious and bigger-than-ever Sharknadoes. As a result, with prehistoric Stonehenge as the epicentre of the unstoppable new menace, Fin's young son, Gil, gets sucked into the heart of the brutal cyclone, with minimal chances of survival. Now, Fin Shepard, humankind's dauntless chainsaw-wielding hero, and his intrepid bionic wife, April, must track down a complex and omnipotent vortex formation that rapidly transforms into something unimaginable: an ever-growing Sharknado of global proportions. This time, Fin and April have their work cut out for them, in a perilous mission across the four corners of the world. Who shall live and who shall die when the fifth awakens?