The Doctor and his companions accidentally travel to the year 56, where Equestria is currently at war with the new Changeling Empire. In order to stop the invading army, the Doctor will need to team up with a hardened Celestia and a simple farmmare.
As the armies recover, Esmeralda sets her sights on Canterlot. Meanwhile, as Donna ventures into the Changeling Castle, the Doctor, Twilight, and Angie take charge of the Equestrian army while Celestia recovers.
The Doctor must solve the secret behind a mysterious mare named Colgate if he wishes to save her from an ancient creature, as well as save Twilight and Pinkie Pie from the past.
Colgate, Clockwork, Bright Eyes, Matilda, and a universally-displaced Daring Do travel to discover the hotspot of dimensional rifts in the Equestrian universe.
The Doctor finds himself in Equestria following a violent regeneration and is forced to work alongside an annoyed Twilight Sparkle in order to defeat an old enemy.
The Doctor and Twilight, after accidentally picking up a mysterious mare named Matilda, end up 100 years prior to the birth of Princess Celestia and run into the king of chaos himself at a time when he was actually good.
The Doctor and Twilight finally return to 1002 only to discover that they've arrived a little bit late. Meanwhile, an old enemy returns to take their revenge on Ponyville.
The Doctor and Twilight arrive on the planet of Eugora in 1899 and come across an army base in need of a doctor as well as two enemies that have dark goals in mind.
The Doctor and Twilight end up in Canterlot in 987, where they come across a young Shining Armor and a devious villain who has dark plans for the young unicorn.
The Doctor and his companions arrive in the Griffin Kingdom in 1021. Here they come across a future Rainbow Dash as well as a killer from an alternate dimension with a familiar face.
After a month of traveling, things seem to be going well for the Doctor and his companions. However, after a certain egotistical unicorn appears in the TARDIS, they find themselves trapped in an army base that has a bad infestation.
With Thalia growing closer to destroying Ponyville, it'll take two Doctors and the return of an old ally to stop them. A new chapter in the Doctor's adventures in Equestria is about to begin.
The Doctor, Twilight, and Derpy arrive in the England of the Doctor's universe on Christmas Eve of 2010. What waits for them includes an icy storm, something from Derpy's past, and a reunion with a lost friend.
The Doctor has been living in Ponyville for several peaceful weaks, but the peace is shattered when a stallion from an alternate dimension named Clockwork appears.
The Doctor, Twilight, and Derpy end up accidentally taking a detour on their way to the Doctor's universe and instead end up in a reality where they are merely fictional characters.
The Doctor and his companions return to 1002 and arrive in the middle of Canterlot. Meanwhile, a Dalek appears and names Princess Luna as its next target.
Derpy wishes to go somewhere relaxing. The Doctor is willing to grant her wish but the unexpected appearance of a unicorn named Twilight Sparkle and the TARDIS unexpectedly taking them 600 years into the future changes his plans.
The Doctor returns Derpy to her time, but what they find waiting for them is a panicked Carrot Top, a mysterious spaceship, a pair of confused mares, and a sinister creature with a desire for Derpy Hooves.
A month after the return of King Dusk, Twilight is still his captive but the Doctor and his allies are planning to infiltrate the deadly land of twilight in order to save her and all of Nymphadora.
The Doctor and Derpy arrive on the Moon almost 1000 years in Derpy's future. Here, they find a futuristic, Equestrian Moonbase as well as a dark force that has a score to settle with the visiting Princess Luna.
The Doctor and Derpy Hooves have been traveling with each other for the past few months, only Derpy having feelings. Suddenly, Doctor Whooves starts to develop some feelings as well. They try to hide them but fails. What will happen? Read to know!
Dr. Whooves knows that soon there was a time where he had to leave Derpy in Ponyville , and he would continue on with his adventures. He had grown an attatchment to the grey cross eyed mare. Writing his last known words in the pony world
The Doctor has to leave another one of his companions. But this one is different. This mare was just like the cross eyed mare that he left behind in the same world that he couldn't find. But a secret leads to happiness for the Doctor. Rose (Derp
The Doctor is back, and he must stop a Zygon disease from killing everyone on Earth. With Twilight Sparkle, and Sunset Shimmer at his side, the Doctor has just thiry-six hours before the disease kills him, and everyone on the planet.
Following an accident with the TARDIS, the Doctor finds himself in a strange universe with a new body that he didn't gain from regeneration. Meanwhile, a pegasus named Derpy is unaware that her life is about to change forever.