In this first volume of a thrilling middle grade graphic novel series, a sixth-grader named Pablo discovers his locker is a portal to the realm of monsters!
For hundreds of years, something in the basement of Glenfield Middle School has waited for its chance to open a portal into the realm of monsters. Now its time has come, and the school is going to need a hero. Pablo Ortiz . . . isn't that guy. All he wants to do is lie low and get through middle school in one piece. So when Pablo accidentally opens the portal and summons a vengeful Aztec goddess, he'll need the butt-kicking skills of his new friends and the wisdom passed down by his abuela to take her on.外文書商品之書封，為出版社提供之樣本。實際出貨商品，以出版社所提供之現有版本為主。部份書籍，因出版社供應狀況特殊，匯率將依實際狀況做調整。
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