The Lil River Rats and the Adventure of the Lost Treasure (2003)

Plot

Nine-year-old Molly Brown is inseparable from her beloved river, a source of joy and adventure. Following her mother's passing, life becomes challenging as her father, Paul, faces mounting medical bills for Molly's ailing grandfather, "Cappy." With the family home on the line, Paul considers selling everything and relocating. Devastated at the thought of leaving her friends and the river behind, Molly hatches a plan to save her cherished home and keep her family together. Her determination sparks an adventure that will change everything for her and those she loves.