At a party at the swank Lanford Country Club, Roseanne forges a surprising bond with Edgar Wellman, Jr., the son of her hated former boss. When he reveals some shocking news about the future of Lanford, Roseanne realizes she may be the only one who can save her hometown.

After they wrap up the Wellman Plastics buyout, Roseanne doesn't know what to do when she finds herself deeply attracted to Edgar Wellman, Jr., and realizes that he is equally bewitched by her.

A distinctive feature of this stone site are the trilithons, which consist of two upright stones topped by a horizontal lintel stone. In this program, the NOVA team considers how to transport and raise the massive stones, as well as how to place the lintel stone on top. By comparing different strategies and adapting ramps, levers, and other tools that might have been available to the ancient builders, the team works to meet the challenge.

Even without such technological advances as wheels, arches, draft animals, iron tools, or a system of writing, the Inca-utilizing a tradition of shared labor-achieved a number of engineering feats. The NOVA team explores both stonework and bridge building, experimenting with dragging and fitting huge stones, and working with the people of an Andean village to create a suspension bridge made only of grass ropes.

Eddie feels blue, so Martin hires a dog psychiatrist to determine the cause of his depression.

It's Valentine's Day, and Carter's old flame Spence wants to meet with him. Meantime, Mike goes on a date from hell with a beautiful friend of Nikki's, and Paul's romantic evening with Claudia becomes unforgettable for all the wrong reasons.