Summary
Power Ponies
In the fictional city of Maretropolis, a super-villain named Pharaoh Phetlock has just robbed a museum of priceless artifacts. As he makes his getaway, the Power Ponies stop him. As the super-powered ponies deal with Phetlock's mummy minions, Hum Drumknocks Phetlock out by comically falling on top of him. Some time later, at an appreciation ceremony held by Maretropolis' Mayor Blossom, the Power Ponies are presented with another key to the city in recognition of their heroism. When asked by a reporter what the secret to their success is, the Masked Matter-Horn says it's teamwork.
Upon returning to their headquarters, the Power Ponies (except Hum Drum) immediately lash out at one another, resentful of each other's company. Matter-Horn, just as bitter as the others, says as long as they act like a team in public, they can argue as much as they want in the privacy of their headquarters. With that, the ponies each retire to their own rooms, leaving a dismayed Hum Drum alone.
Meanwhile, at Maretropolis' Balkham Asylum, super-villains Pharaoh Phetlock, Long-Face, Smudge, and High Heel meet and bemoan their continuous defeats at the hands of the Power Ponies. As they talk, the Mane-iacenters and suggests forming an alliance against the Power Ponies together. The other villains are intrigued by the idea, and with the help of another villain named Shadowmane, they stage a jailbreak.
At their headquarters, the Power Ponies hear an alarm being raised at Sparkle Labs. After a brief leadership argument between Matter-Horn and Mistress Mare-velous, the ponies rush onto the scene and find the Mane-iac's league of villains waiting for them. Through the villains' teamwork, the Power Ponies are quickly defeated one by one.
With the exception of Hum Drum, the ponies are hooked up to a device that transfers their superpowers to the villains: Pharaoh Phetlock gains Fili-Second's powers, Long-Face gains Radiance's, Shadowmane gains Mare-velous', Smudge gains Zapp's, High Heel gains Saddle Rager's, and the Mane-iac gains Matter-Horn's. Now even more powerful than before, the villains leave to wreak havoc on the city.
The powerless heroes wonder how they were defeated, and Hum Drum says it was because of friendship. The young colt calls out his teammates on their unfriendly behavior and says if they want to defeat the villains and get their powers back, they need to become a better team—and better friends. Through Hum Drum's guidance and lessons (inspired by his favorite television show), the Power Ponies take part in various friendly activities and trust-building exercises, becoming closer as a result. Now armed with the power of friendship, the Power Ponies go to challenge the super-villains a second time, but they are swiftly defeated and captured again. Mare-velous says it isn't enough for them to be friends; they need to break up the villains' friendship as well.
In the heart of the villains' lair, Pharaoh Phetlock discovers the Power Ponies have escaped. Fili-Second lures him away from the other villains and, from the shadows, implants feelings of inadequacy in his head. Elsewhere, Zapp and Saddle Rager turn the other villains against one another. With the villains at each other's throats, Radiance repairs the power transfer device and restores the Power Ponies' abilities.
The villains are taken into custody and the Power Ponies commend Hum Drum for his lessons on friendship. The ponies return to their headquarters and watch Hum Drum's television show "My Little Donkey."
