Eliot Shag is having a tough time thinking up a new idea for an Ace Hart Adventure - until a squeaky toy named Mr. Mokey sparks his imagination. Unfortunately, the plot lands Ace nose-to-nose with the infamous gang of Bugsy the Dogfather and his mongrel mafia!

Eliot is ordered by his boss to draw a story with violence in it. Unfortunately, this goes against Elliot's belief that violence is unnecessary.

Eliot Shag's boss at the network wants a more up-to-date, funky Ace Hart show. Buno delights in the news, hoping that Eliot will be evicted from his apartment.

Bruno is convinced that aliens are invading Dog City. Eliot decides to take this as a cue for his next Ace Hart Adventure.

Eliot is ill but must meet a story deadline. Much to Ace's annoyance, Eliot's creative neighbors all pitch in to help, injecting their own styles to story and animation as they take turns.

Ace Hart adventures in Jurassic Bark complete with the Bugsy Vile gang, while Eliot helps Artie grapple with the trials and tribulations of creativity. We also meet new characters for this season such as Yves'n Steven-Yves, a cat burglar whose attempts at stealing the guarded prized possession are always foiled by Steven, the happy go lucky guard dog. We get an introduction to Dot, Rosie's niece in the adventures of "Rosie and Dot." Finally we meet Mr. Moogie, Artie's animated squeaky toy.

Eliot salutes the horror genre in this chiller thriller, but strange things start happening in his own building as Artie, Bruno and Eliot begin to think that Bruiser has gone mad in a case of mistaken identity. Meanwhile Ace Hart and Eddie have stumbled onto a plot by Rottweiler to take over the world with his Sci - Fido monster and Rosie as it's bride! Mr. Moggie takes us on an adventure under the bed as he confronts and triumphs over "The Thing under the bed." Our Dog City cast also puts a slant on their version of the well-known Edgar Allan Poe-em, "The Tell Tale Heart, Liver and Egg."

It's the summer and everyone is excited, about to disperse on their vacations. Eliot however is stuck behind doing a show so he sends Ace and Rosie on a vacation, accompanied by Eddie and Dot.