How to be a Hero: A Gathering of Giants by Cat Weldon

Take up the quest in the hilariously epic finale of the How to be a Hero series, A Gathering of Giants, from Cat Weldon, illustrated by Katie Kear. Unlikely hero Whetstone and banished Valkyrie Lotta are in hiding. Their quest to find the magic harp strings before Loki, the trickster God, can use them to bring chaos to the Nine Worlds has come to a dead end.