Simplify the following text for a Grade 6 native English-speaking person.
Original: Cale meets Joseph Korso ( Bill Pullman ) , a human captain who requests Cale 's help to find the Titan , demonstrating that Cale 's ring contains a map leading to the Titan ; the ring is genetically-encoded to respond to Cale 's father , and hence now only responds to Cale himself , making him the only chance for humanity 's future . Cale and Korso escape to Korso 's ship , the Valkyrie , as the Drej arrive and attempt pursuit .
Simplified: With Korso 's help , Cale learns that the ring his father gave to him can help him find the Titan .