If Basil Andrews isn't rescuing his best friend Arnie Denkins from the school bully, he is giving him pointers on playing a video game called The Mummy's Treasure. Both Basil and Arnie know the perfect place to explore when their fifth grade teacher assigns a partnered science project. Unfortunately, Ms. Stewart pairs the students herself, leaving Basil less than thrilled with his new study buddy. When Basil and his partner venture into the swamp, the two boys find themselves in some deep-down trouble, a web only Arnie Denkins can untangle.