Dive into another exciting magical adventure for girls – will you answer the call of Silver Dolphins? Everyone is busy at Sea Watch with preparations to return young seal Tilly to the sea. Meanwhile, a film crew for popular TV series 'Stage Struck' arrives in Sandy Bay! They're filming on the beaches, making it hard for Silver Dolphins to answer the call without being noticed... Antonia and Cai make a daring rescue of an unusual creature and become celebrities in their own right, but when a rising tide threatens the safety of the film crew is the Silver Dolphins secret about to be exposed for good?