Otherworld Chronicles #2: The Seven Swords

The thrilling, action-packed sequel to The Invisible Tower, which School Library Journal called "a surefire hit with the legions of Rick Riordan fans."Spending the summer fighting dragons, rescuing wizards, and leaping through portals into the Otherworld was just the start of Artie Kingfisher's quest to claim his throne as King Arthur reborn. Now, Artie and his sister, Kay, must gather a team of knights to recover the legendary Seven Swords-or face defeat at the hands of the evil Lordess Morgaine.
The Seven Swords is filled with epic battles, unexpected enemies, and life-changing adventures. Rich in mythology and bursting with twenty-first-century fun, this high-spirited spin on Arthurian legend is perfect for middle grade fans of Percy Jackson, the Alex Rider Chronicles, and House of Secrets. This second book in the action-packed series amps up the adventure with: King Arthur Reborn: Artie Kingfisher just found out he's the legendary king.
Now he has to save a magical world and claim his throne before the evil Lordess Morgaine stops him for good. A New Round Table: To succeed, Artie and his sister Kay must assemble a team of modern-day knights, each destined to wield one of the legendary Seven Swords. Portals to Another World: Leap through crossovers from our world into the Otherworld, a realm packed with epic battles, unexpected enemies, and life-changing quests.
Dragons and Wizards: Face down dragons, rescue powerful wizards, and navigate a world rich in mythology but filled with twenty-first-century fun and danger.