Like the "Tales from the Tardis" series that preceded it, this isn't a story arc in the true sense of the phrase. Rather, it's the title of a series of different stories—more the title of a regular feature of the magazine than a genuine story arc.
The stories in this series had the following in common:
• the stories were not individually titled
• they were one issue in length
• they were mostly uncredited, though sometimes signed
• like "Tales from the TARDIS", they were introduced by the Fourth Doctor
• the stories were not set in the Doctor Who universe
• they are all probably reprints from American Marvel anthology series