Imogen is a little four-year-old girl who loves to swim and wear her pajamas! She always wears a yellow one-piece swimsuit with smiley faces on it, a gold waterproof long-sleeved pajama shirt with pink hearts on it, a pair of orange waterproof long-sleeved pajama bottoms with stars on them, a pair of purple swimming goggles, a pair of light red waterproof mittens and a pair of light purple waterproof slippers. She is a member of a club called the 'Pajama Swimmers Club' along with six other girls. They all live in a big clubhouse where they play, swim and giggle together.