Chou Yan-wen

Tenten, Watermelon Head, and Dragonfly reside with their wise Grandpa. Their tranquil life takes a turn when Grandpa receives a letter about the death of a legendary Daoist, the father of their neighbor Dohei. Determined to seek justice, Tenten and her friends embark on a journey to attain Buddhahood to confront the killer. Shockingly, they uncover that Dohei's father was slain by the notorious Bat Vampire. Fueled by a relentless quest for justice, the children brace themselves for a final, gripping battle to avenge Dohei's father in this poignant tale of tragedy, friendship, and retribution.

Grandfather meets his match when he meets Master Flying Squirrel. Master Flying Squirrel captures Grandpa and transforms him into a ghostslave. Tien Tien turns to grandfather old classmate to defeat the Flying Squirrel and absolve grandfather.

Taiwanese movie