Geronimo Stilton is invited to a rat-jitsu martial arts championship in a snowy faraway land, much to the famouse reporter's surprise. With his helpful relatives, Thea, Trap and Benjamin, Geronimo goes to cover the event for the Rodent's Gazette. But something strange is happening. After each championship match, the winner disappears without a trace! Will Geronimo get involved and solve the mystery of the missing martial artists? Or will he be consumed...

On a trip to Coney Island to pick up trash, Effie and Garance meet a mermaid and help her find her missing sister.

"It was a time of uncertainty in the infancy of the growing nation. The Wild West was open and beckoning to displaced men and families, and many chose to travel to the unsettled frontier, dreaming of new homes, land, and even riches. But few reckoned on those that had lived in those lands for centuries, the native peoples: Blackfoot, Crow, Sioux, and more. Elijah McCain, fresh from the Union army -- where he had attained the rank of Lieutenant Colonel...

"After Pat and Jen saved Bomby, their cat Cloud, and one hundred friendly zombies from the clutches of Evil Jen and brought them home from the underworld, they thought their adventuring days were over. But ever since their return, more mysterious new holes have started appearing--and more and more of their friends have started disappearing! After Jen stumbles into one and Pat rushes after her, they find themselves trapped in a dark, dank boomium mine....

"Eight years ago an earthquake--the Big One--hit along the Cascadia fault line, toppling cities and changing landscapes all up and down the west coast of the United States. Life as we know it changed forever. But for Vietnamese American Virginia Crane, life changed shortly after the earthquake, when her mother left and never came back. Ginny has gotten used to a life without her mother, helping her father take care of her two younger brothers, Wes...