The game begins with what appears to be the game introduction on the Avatar’s own computer screen. Suddenly, the screen is filled with static, and a red creature who calls himself The Guardian. The Orb of the Moons glows, and the Avatar finds that a red moongate has appeared behind the house. The Avatar thus returns to Britannia through the moongate, and arrives in Trinsic, where he meets Iolo.
Iolo tells him that two centuries have passed since he left. The whole town is shocked due to a ritualistic murder that occurred the preceding night – the body of the blacksmith Christopher was found in the stable. Finnigan, Mayor of Trinsic, asks the Avatar to investigate the incident. Ultima VII introduced major changes in the Ultima series.
The most serious alteration is that as far as the player is concerned, the world is no longer tile and grid-based; tiles are still used internally (in a largely improved way where the tiles themselves are smaller and frequently grouped), but they no longer affect character and monster movement or the item placement the same way. The maps are also more visibly multi-layered, and objects and things can be stacked on top of each other.
This can also affect movement, and be part of puzzles; some places are inaccessible unless the player stacks items to form stairs. A striking visual change is that the gameworld now takes up the entire screen in its original DOS environment, while previous Ultimas used a substantial portion of the screen for text, dialogue, buttons, icons, and the like.