Anaconda

The film follows a struggling circus, deceived by its former partner, as it embarks on a tour in Thailand. During the journey through a Southeast Asian rainforest, they encounter attacks by a giant python. They meet a mysterious man named Jeff who offers to help, but they soon realize he's a poacher. As they search for Jeff's boat, they face life-and-death struggles with the python and Jeff himself.
(Source: ChineseDrama.info)