The Secret World of Alex Mack (1994)

S3E23 BMX

During a biking adventure through the woods, Ray and Alex stumble upon a reclusive figure residing in a treehouse. To their surprise, he reveals himself as one of the original scientists behind GC-161. Meanwhile, Vince and Lars catch wind of the scientist's presence. In a daring move, Alex, Annie, and Ray band together to save him from the clutches of the plant’s henchmen.