Sunsprite (2019)

After the death of his grandmother, Alder and his mother move out to the countryside to live with Grandpa Art. A few snarky remarks get Alder in trouble and he is sent to go clean out his grandfather's workshop, where his childhood friend, Lacey, pops in for a visit. Alder's world is shaken when an old and supposedly broken HAM radio begins transmitting coded messages. With Lacey's help, Alder decodes the messages and discovers that someone mysterious is asking for help. Mystery and intrigue lead Alder and Lacey on an adventure to make a stranger's last wish a reality.