A lost colony of hungry red squirrels struggles to survive in the pinewoods beside the sea. They have been forced to the margins of the great island by plague and the expansion of a cruel grey squirrel empire. But when four boisterous young friends - Glider, Porker, Blinky and Slider ¬- rescue a stranger being chased by grey soldiers, their small world changes forever. The young Reds discover they are the descendants of a great warrior clan - and lead a dramatic uprising against the greedy Greys. The Red rising has begun.