Season 3
Star returns to her home dimension of Mewni where she discovers that magic is disappearing throughout the kingdom; Star must dig deep and challenge archnemesis Ludo in an effort to save her family and kingdom.
Episodes
1. Battle for Mewni: Return to Mewni
Star returns to her home dimension of Mewni where she discovers that magic is disappearing throughout the kingdom.
2. Battle for Mewni: Moon the Undaunted
Star must dig deep and challenge archnemesis Ludo in an effort to save her family and kingdom.
3. Battle for Mewni: Book Be Gone
Despite dire warnings, Ludo tries to write a new chapter in the Book of Spells.
4. Battle for Mewni: Marco and the King
King River struggles to keep the kingdom running without Queen Moon's help.
5. Battle for Mewni: Puddle Defender
Buffrog helps Star escape from Moon's ever-protective watch.
6. Battle for Mewni: King Ludo
With Ludo in control of the kingdom, Marco must decide his next move.
7. Battle for Mewni: Toffee
King Ludo's reign reaches as a tipping point as Star returns to the castle. Star must summon her strength to save her family and the kingdom.
8. Scent of a Hoodie
Star secretly keeps Marco's hoodie as a reminder of their friendship.
9. Rest in Pudding
Star has recurring visions of Glossaryck and believes he's haunting her.
10. Club Snubbed
Tom snubs Star at the Silver Bell Ball.
11. Stranger Danger
Star meets the ancient Queen Eclipsa.
12. Demoncism
Star and Tom's relationship is put to the test when Tom decides to get rid of his demons.
13. Sophomore Slump
Marco decides to put a full effort into living life in the present on Earth.
14. Lint Catcher
Knight of the wash, Sir Lavabo, gets a familiar squire.
15. Trial by Squire
Star prepares for the Midnight Warrior Blowout Sale at Quest Buy.
16. Princess Turdina
A surprise visitor pressures Marco to reveal Turdina's true identity.
17. Starfari
Star goes out into the field to understand why Mewmans treat Monsters unfairly.
18. Sweet Dreams
Star discovers she travels through multiple dimensions in her dreams.
19. Lava Lake Beach
Kelly breaks up with her boyfriend and Marco questions his friendship with Star Butterfly.
20. Death Peck
Star urges the royal youth of Mewni to sign a petition calling for the equal treatment of monsters.
21. Ponymonium
Star becomes thrilled when Pony Head invites her to dinner with her sisters.
22. Nightlife
Star learns that Marco and Hekapoo have been dealing with rogue interdimensional portals.
23. Deep Dive
Star's sleep-portaling becomes a danger and she decides to put a stop to it.
24. Monster Bash
All the youth of Mewni gather at the ancient Monster Temple to celebrate a new era of monsters and Mewmans living together in peace -- until guests start disappearing.
25. Stump Day
Star, Marco and the rest of Mewni celebrate a special snowy holiday, "Stump Day."
26. Holiday Spellcial
Spider with a Top Hat invites one of Eclipsa’s dark spells to the office holiday party.
27. The Bogbeast of Boggabah
King River interrupts Star's eager investigation into Eclipsa's past and demands her help on a dangerous hunt.
28. Total Eclipsa the Moon
Moon enlists Eclipsa herself to access Mewni's most guarded records.
29. Butterfly Trap
Moon and the Magical High Commission put Eclipsa on trial for her evil past with Star as a key witness.
30. Ludo, Where Art Thou?
Dennis goes on a dangerous journey to find Ludo living in another dimension.
31. Is Another Mystery
Buffrog leaves Mewni in search for a better life, and Star goes to look for him.
32. Marco Jr.
Marco returns to Echo Creek to discover that his mom is pregnant.
33. Skooled!
Ponyhead returns to St. O’s and finds that the curriculum got tougher.
34. Booth Buddies
A magical photo booth at a wedding goes on the fritz and captures Star and Marco inside.
35. Bam Ui Pati!
Ponyhead shuts herself away to watch the finale of her favorite Korean Drama.
36. Tough Love
Eclipsa and Moon bring Princess Meteora home peacefully after the massive destruction she's caused.
37. Divide
Star becomes acting Queen and plans for Marco and his warriors to delay Meteora from reaching Castle Butterfly long enough for Star to find Moon and destroy the monster princess.
38. Conquer
Star must find the courage to face Meteora alone and make a decision that will change the kingdom forever.