Molly glæder sig til sommer med familien på Ærø, men chokeres, da hendes elskede morfar ikke længere kan huske hende. Mor Rikke planlægger i desperation at få ham på plejehjem. Midt i kaosset opdager Molly, at morfar gemmer på en hemmelighed. Han beder hende om hjælp til at finde en gylden last, han har gemt, før det er for sent. Men er morfar smugler?
Molly is looking forward to summer with her family on Ærø, but is shocked when her beloved Grandpa can no longer remember her. Her mother Rikke desperately plans to put him in a nursing home. In the midst of the chaos, Molly discovers that Grandpa is hiding a secret. He asks her for help in finding a golden cargo he has hidden before it is too late. But is Grandpa a smuggler?
