The sixth season of Catch! Tiniping returns as a short-format fantasy magical girl series with a dramatic streak. While traveling by train to an important gathering, the Princess Teeniepings abruptly disappear, leaving nothing behind. The mystery deepens when a Legend Teenieping shows itself to Romi in a mirror. Teaming up with a fresh group of Royal Teeniepings, Romi sets out on a big mission to catch the missing Princess Teeniepings.