Captain Alphabet, a kindly pirate, wakes to find several letters missing from his beloved ship's name, 'Letter-Finder Cruiser'. With his intelligent cat, Silly Boop, he embarks on a whimsical journey across the Alphabet Ocean. They visit islands shaped like the missing letters, each guarded by a charming animal friend (Good Bubbles the bird, Wink the Silly squirrel, Rudy the Rabbit, Freddy the Frog, Professor Pip the mouse, Naptime Ned the koala, Dexter the Dog, Charlie the Caterpillar, and Sammy the Snake). To retrieve each letter, Captain Alphabet and Silly Boop must learn its sound and a fun rhyme, playing a game unique to each island. After successfully collecting all ten missing letters – 'e', 't', 'e', 'r', 'f', 'i', 'n', 'd', 'c', and 's' – he returns to his ship. With each letter placed back, the ship's name is restored, glowing brightly. The journey ends with Captain Alphabet and Silly Boop sailing home, their mission complete, filled with the warmth of newfound friendships and the joy of a fully restored ship, drifting off into peaceful sleep as the stars twinkle.