When Cal was saving Petropolis from Snaptrap When Moon made Cal accidentally destroyed haif of the city. Then Cal yelled at Kristina when he was in a bad mood. Everyone got so mad at Cal that the Chief fired him from TUFF. That night Cal wished to run away by going back home to Richmond, Maine or another world meanwhile he saw a magic mirror that sucked him in and landed in a pony world known as Equestria where he meets Pinkie Pie, Rainbow Dash, Rarity, Applejack, Fluttershy, Twilight Sparkle, Spike, Daring Do, Sera Camp and other ponies. Meanwhile back in Petropolis Snaptrap took over and changed Petropolis to Snaptrapolis. So the T.U.F.F. Agents search for Cal and Cal must get help from the mane 6 and some new friends of his own to help him get home to Petropolis and stop Snaptrap and D.O.O.M.
NOTE 2: when Cal was inside the wormhole on his way to [[Ponyville]] and back to [[Petropolis]] he saw other characters from other Hub Network shows, Nickelodeon shows and other YouTube shows and other YouTube shows by [[Charles Lewis]]