When you trap a tiger

"When Lily and her family move in with her sick grandmother, a magical tiger straight out of her halmoni's Korean folktales arrives. The tiger offers Lily a deal--if Lily will open her grandmother's star jars and return what she stole, the tiger will heal her grandmother. But deals with tigers are never what they seem! With the help of her sister and her new friend Ricky, Lily must find her voice . . . and the courage to face a tiger"--Provided by publisher.