Bad Mermaids Meet the Witche is a special, short book published for World Book Day (WBD), featuring characters from the popular Bad Mermaids and likely the Witch Wars series, both created by Sibeal Pounder. The story centers on the chaotic encounter between the rebellious Bad Mermaids and the magical characters, possibly a young witch like Tiga Whicabim. The plot is a short, humorous crossover adventure where the mischievous mermaids and the eccentric witches join forces or clash, resulting in maximum magical mayhem and celebrating the silliness of both fantasy worlds.