Thea Stilton graphic novel

At the beginning of the new school year at Mouseford Academy, Thea Stilton's group of special students, the Thea Sisters, investigates when a lone orca interferes with the annual migration of the whales off the coast of Whale Island.

"Mouseford Academy students are taking a special hot-air ballon tour of Whale Island and beyond, but when they pass over Turtle Island, they see a lack of turtles and a whole lot of trash! And for once, the selfish Vissia de Vissen seems worried about this mysterious disappearance too! In order to solve this riddle, Colette, Nicky, Pamela, Paulina, and Violet will have to do the impossible--team up with Vissia de Vissen and her children Vic and Vanilla! Will they be allies--or are they still enemies?"--Back cover.

"When the Thea Sisters compete in a battle of the bands, in hopes of meeting their favorite band Top Direction, they must find their sound, write a song, and identify the saboteur who is trying to ruin their performance"--OCLC.

"Mouseford Academy is planning a spring field trip to the waterfall in the forest but angry bears are chasing people! Something strange is going on--could Vissia de Vissen be up to her nefarious tricks again?"--Back cover.