Legendary catgirl and head of the Runes, Matilda Peppercorn, is called to some SWAGGey action when a swarm of strange visitors arrive at the School of I.C.E. with a message. Someone, somewhere, is waking up. But who? Scotland's mysterious fairy folk and famous monsters? The race known only as 'the Others' who terrify all of witchkind? Or something much, much worse? Yes, yes and . yes! Terrible trials are testing the world. It's going to take a team effort to fight off what's awoken, if Tilly's old friends and her her team of SWAGG can stop fighting with each other! But Tilly's been woken up too.

She's always been a legend. Now, with SWAGG, she's about to discovere her ultimate destiny .