"It's a peaceful day of horseback riding for Sadie, her daughter, and her grandchildren, until a squall sends them scurrying to a rustic shelter built by her late husband, T.R. When lightning damages a nearby tree, it reveals a long-kept secret: a rusty old tin with an ornate ring and a handwritten love poem hidden inside. The discover sends Sadie on a journey of remembrance and reflection of a pivotal moment as she tries to understand how the objects got in the tree, so near T.R.'s favorite fishing spot ... Meanwhile, at prom, one of Theo's friends becomes the victim of an embarrassing social media smear campaign, so he sets off on his own investigation to discover who was behind the cruel prank and bring the culprit to justice."--Back cover.