Season 1
26 listed episodes · First aired July 25, 2023

Season overview
Deep in the sea where mermaids live, the Merqueen created magical Bubblegems to protect the undersea kingdoms from evil forces. Now it’s time to find her successor, and whichever princess can gather the Bubblegems will be the new queen. But the Bubblegems are scattered on the land, hidden in secret volcanos, so the seven mermaid princesses must emerge from the sea and go to human school while they search for the precious jewels. But someone else is after the Bubblegems – the wicked witch Black Dia, who is tired of her exile in the dark deep sea and wants to seize control of the sea world for herself. Will her black magic prove too powerful for the young mermaid princesses, or can they work together to collect all the Bubblegems and save the undersea kingdom?
Episodes
The mischievous Princess Purple went to the human world of her dreams! The wonder of the human world is short-lived... A moment of crisis comes when the appearance of a mermaid is revealed...
E2Chaos on the First DayPurple, who came to the classroom, acts strangely and was embarrassed! Will Purple be able to behave well at school?
E3Purple's Princess DiaryPurple wants to be a perfect princess like Red. However, the road to becoming a formal and cultured princess is long and difficult.
E4Shh! It's a Secret!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?
E5Fancy Festival!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 se…
E6The Library LEGENDPurple and Red along with their friend Leo meets Green Leaf while wondering about the rumors of the library.
E7Sweet BazaarPurple, 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 anoth…
E8Twin StickersPurple 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.
E9Purple King's VisitIts 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
E10Find the Treasure ShipPurple 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
E11Abyssal NightmarePicking 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?
E12Burning BluePurple and her friends meet the new transfer student named Blue Sapphire who challenges them into a competition although Blue may be loud sometimes.
E13Bickering VolunteersThe 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?
E14Surprise Birthday PartyIt 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 monste…
E15A Long DayPurple 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.
E16Bluetok StarThe princesses compete to take the first place in the popularity rankings on the popular SNS Blue Talk by taking good selfies.
E17The Strange Art RoomPurple 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.
E18The Princesses in The DrawingWhile 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 ther…
E19The Yellow Ball's IdentityPicking 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?
E20Singing My SongPurple 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
E21Secret Guardians at RiskThe 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
E22The Appearance of the Abyssal PrincessPurple accidentally meets the 7th princess, Indigo Keen and wants to become her friend, but the other girls no longer understand her well
E23Everyone is a StarPurple, 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
E24Starry Night CampingPurple 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
E25Stay Strong, Indigo!The Princesses celebrates the fact that they're close to get all the Bubblegem fragments, but Indigo, still full of resentment, has other plans
E26We are a RainbowAfter 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