The climax of "The Return of Tambelon". After over 30 minutes of screentime spent suffering defeat after defeat against Grogar, all the good guys have finally been captured in his dungeons. Cue them combining their various abilities for an escape plan worthy of Macgyver, turning Grogar's own army against him, and finally destroying his power to the triumphant tune of "Let the Bell of Freedom Ring".
"The Magic Coins" has the ponies' adventures to get three treasures for Niblic the troll; when he rejects them, Megan offers him something even better, from one of his own coins—a friend.
"The Glass Princess" has Shady come up with the plan to save the day.
In "The End of Flutter Valley," the Little Ponies and Megan save the Flutter Ponies from Queen Bumble and the bees, and together they defeat the Witches of the Volcano of Gloom.
The fact that the bees manage to capture and subdue the Flutter Ponies is pretty awesome.
Sting cements his Heel-Face Turn and calls out Queen Bumble for her selfishness. This is followed by him punching out Pointer, twice.
Honeysuckle nabbing Bumble with her own crane machine and threatening to drop her into a deep pit if she doesn't let the Flutter Ponies go.
The Stonebacks arriving just in time to save Megan and the Flutter Ponies, commanded by Honeysuckle.