Lost & Found (2016) (2016)

Plot

Young brothers Andy and Mark find themselves spending summer with their uncle on a secluded island, uncovering a captivating family mystery. Their eccentric grandfather, who once owned the island, mysteriously disappeared, taking with him the key to a hidden fortune. As they explore the island's enigmatic past, the boys discover a treasure hunt crafted by their grandfather that promises not only wealth but also a chance to mend their fractured family. However, sinister forces are also on the hunt, determined to thwart their quest. Ultimately, the brothers realize that the true treasure lies in familial bonds and confronting buried secrets.