A storm hits London - no ordinary storm! This is the worst hurricane ever recorded by meteorologists. Storm Betsy is sweeping across the Atlantic after devastating the eastern seaboard of the USA, and now it's heading straight for Britain. Mark, Andy, and Fiona have been tasked with reporting on its destructive path. As massive waves hurtle along the Thames, destroying everything in their wake, can Mark save his mother from the wild river? The city is in grave danger, and the Prime Minister struggles to manage the enormous catastrophe brought on by climate change. The storm wreaks havoc along the eastern coast before reaching the Thames, overwhelming the Thames Barrier and sparking fires along the riverbanks. Emergency services struggle in vain to contain the horrific impact on the lives of the people and the city's infrastructure. Based on expert research, this story reveals what could happen to London and other major coastal cities at sea level - a dire warning for the future!