Over the past year, an anonymous "ducker" has taken over the town of Novato, Cali., hiding small rubber ducks across the city every weekend. The ducker's identity? 10-year old Ryley Gibson, whose struggles with his own mental health propel him to do good in the world for others. Seeing joy from people finding and pocketing the ducks gives him joy, and he does it for no other reason other than "to make people happy."