Star vs. the Forces of Evil Season 3, Episode 12: Demoncism

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.

11 min

2

Battle for Mewni: Moon the Undaunted

Star must dig deep and challenge archnemesis Ludo in an effort to save her family and kingdom.

11 min

3

Battle for Mewni: Book Be Gone

Despite dire warnings, Ludo tries to write a new chapter in the Book of Spells.

11 min

4

Battle for Mewni: Marco and the King

King River struggles to keep the kingdom running without Queen Moon's help.

11 min

5

Battle for Mewni: Puddle Defender

Buffrog helps Star escape from Moon's ever-protective watch.

11 min

6

Battle for Mewni: King Ludo

With Ludo in control of the kingdom, Marco must decide his next move.

11 min

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.

22 min

8

Scent of a Hoodie

Star secretly keeps Marco's hoodie as a reminder of their friendship.

11 min

9

Rest in Pudding

Star has recurring visions of Glossaryck and believes he's haunting her.

11 min

10

Club Snubbed

Tom snubs Star at the Silver Bell Ball.

11 min

11

Stranger Danger

Star meets the ancient Queen Eclipsa.

11 min

12

Demoncism

Star and Tom's relationship is put to the test when Tom decides to get rid of his demons.

11 min

13

Sophomore Slump

Marco decides to put a full effort into living life in the present on Earth.

11 min

14

Lint Catcher

Knight of the wash, Sir Lavabo, gets a familiar squire.

11 min

15

Trial by Squire

Star prepares for the Midnight Warrior Blowout Sale at Quest Buy.

11 min

16

Princess Turdina

A surprise visitor pressures Marco to reveal Turdina's true identity.

11 min

17

Starfari

Star goes out into the field to understand why Mewmans treat Monsters unfairly.

11 min

18

Sweet Dreams

Star discovers she travels through multiple dimensions in her dreams.

11 min

19

Lava Lake Beach

Kelly breaks up with her boyfriend and Marco questions his friendship with Star Butterfly.

11 min

20

Death Peck

Star urges the royal youth of Mewni to sign a petition calling for the equal treatment of monsters.

11 min

21

Ponymonium

Star becomes thrilled when Pony Head invites her to dinner with her sisters.

11 min

22

Nightlife

Star learns that Marco and Hekapoo have been dealing with rogue interdimensional portals.

11 min

23

Deep Dive

Star's sleep-portaling becomes a danger and she decides to put a stop to it.

11 min

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.

22 min

25

Stump Day

Star, Marco and the rest of Mewni celebrate a special snowy holiday, "Stump Day."

11 min

26

Holiday Spellcial

Spider with a Top Hat invites one of Eclipsa’s dark spells to the office holiday party.

11 min

27

The Bogbeast of Boggabah

King River interrupts Star's eager investigation into Eclipsa's past and demands her help on a dangerous hunt.

11 min

28

Total Eclipsa the Moon

Moon enlists Eclipsa herself to access Mewni's most guarded records.

11 min

29

Butterfly Trap

Moon and the Magical High Commission put Eclipsa on trial for her evil past with Star as a key witness.

11 min

30

Ludo, Where Art Thou?

Dennis goes on a dangerous journey to find Ludo living in another dimension.

11 min

31

Is Another Mystery

Buffrog leaves Mewni in search for a better life, and Star goes to look for him.

11 min

32

Marco Jr.

Marco returns to Echo Creek to discover that his mom is pregnant.

11 min

33

Skooled!

Ponyhead returns to St. O’s and finds that the curriculum got tougher.

11 min

34

Booth Buddies

A magical photo booth at a wedding goes on the fritz and captures Star and Marco inside.

11 min

35

Bam Ui Pati!

Ponyhead shuts herself away to watch the finale of her favorite Korean Drama.

11 min

36

Tough Love

Eclipsa and Moon bring Princess Meteora home peacefully after the massive destruction she's caused.

11 min

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.

22 min

38

Conquer

Star must find the courage to face Meteora alone and make a decision that will change the kingdom forever.

22 min