Season 1

Tired of still waiting for too long to see what's out of the sea, the mischievous Princess Purple escapes without her father's supervision to discover the land, but things gets complicated

Purple finally joins to a human school and is excited to introduce herself nicely, and then to meet new friends! But suddenly, she discovers that she is not the only princess that joined her same school

Purple wants to be a perfect princess like Red. However, the road to becoming a formal and cultured princess is long and difficult.

Leo's pet pig (that he is secretly bringing into class) took Purple's headband that made Purple turn into her mermaid form. Can she get it back before anyone discovered her secret?

Purple wanted to visit the festival on land, but her father refuses to let her go since mermaids are forbidden to go to the surface at night, but luckily Purple managed to teleport to the festival until Black Diamond send another blob monster to disrupt the fun.

Purple and Red along with their friend Leo meets Green Leaf while wondering about the rumors of the library.

Purple, Red, and Green first meets Orange Amber during in their school bazaar market and helps her prepare her sweet bazaar to serve some desserts to their classmates and teachers, but thanks to Black Dia who sent another blob monster, it gets into a baking catastrophe...

Purple wanted to follow Green's movements without mistakes and falling so she used a twin sticker which is actually created by Black Dia where she created 2 twin blob monsters.

Its Father's Day and Purple brought her dad, Purple King, to show her classmates that he is the best, but things doesn't go as she expected

Purple discovers a strange map and Green tells her that it leads to a mysterious shipwreck, so she brings the other princesses to search the ship at night

Picking where we left off, the princesses who is hypnotized by Black Dia's blobs dreamt of the items they desired, but can they resist this nightmare and focus on defeating the rest of the blob monsters?

Purple and her friends meet the new transfer student named Blue Sapphire who challenges them into a competition although Blue may be loud sometimes.

The princesses are doing volunteer service, but they started to compete each other. When a Blob appears and attacks them in the battle, can the princess defeat it and learns that it's not okay to outsmart each others?

It is Princess Purple's birthday, and she invited the other mermaid princesses to party with her and wanted to invite Leo and his pet pig Kaka too, but Black Dia wanted to ruin this special day by creating a Blob monster to crash into the party, leading the mermaid princesses into a huge fight against it.

Purple and her friends arrive late for school and they'll have to clean the bathrooms before leaving, but the appearance of a Blob makes the same day repeat itself several times.

The princesses compete to take the first place in the popularity rankings on the popular SNS Blue Talk by taking good selfies.

Purple and her friends encounter another transferred student named Yellow Gold who has a magical ability to make drawings come to life, but Yellow seems pretty shy and quiet to them.

While searching for their missing friend Yellow, Shailam explains about Yellow being trapped in a painting and the princesses also got sucked in the drawing where they meet a yellow critter who took shape of a ball there.

Picking where we left off, the princesses are still trapped inside of the painting and still needs to return home while finding their missing friend Yellow. And what is the yellow ball's true identity?

Purple and her friends learn that Teacher Ellie's dream is to become a singer, and then to form a band, so they decide to bring her their aid

The Guardian Fairies were caught by Professor Sneevile during a field trip, so the Princesses must find a way to get rid of a Blob without a Time Stop

Purple accidentally meets the 7th princess, Indigo Keen and wants to become her friend, but the other girls no longer understand her well

Purple, Red and Orange decides to apply to the role of Main Character at the School Theater, but for the surpise of them, they end up being on the supporting role

Purple broughts Indigo to a Night Camping at the School with the other Princesses, but their distrust on her gets worsened once they find that she might be related with Black Diamond

The Princesses celebrates the fact that they're close to get all the Bubblegem fragments, but Indigo, still full of resentment, has other plans

After learning that Indigo had being influenced by Black Diamond to get the Bubblegem Crystals, the princesses head to her castle to save their friend, and then to put Black Diamond's menace into an end