The Go Jetters are paddling down Malaysia's Selangor River in canoes to look at the region's fireflies. But after a bend in the river, they encounter Glitch attempting to chop down one of the protected mangrove trees, hoping to impress Tala with the rare plant. Although they manage to stop him, the approaching dark and some thick mud leave them in a tricky situation. Can the team work out how to light their way and find their friends?