Figure skating has long been one of the marquee events at the Winter Olympics, and over the past few Olympic cycles, the more niche discipline of ice dancing has provided some of the sport’s best drama. This three-part documentary covers the scramble among a handful of accomplished duos, all trying to replace the previous generation of champions. Produced and directed by some of the same people behind Netflix’s “Simone Biles Rising,” the series follows three teams, two of which — the Americans Madison Chock and Evan Bates and the Canadians Piper Gilles and Paul Poirier — have been waiting for years for a chance to top the Olympic podium. The third team, the French skaters Guillaume Cizeron and Laurence Fournier Beaudry, are competing together for the first time, after long stretches with other partners. “Glitter & Gold” offers an intimate look at the planning, practices and unexpected twists of this Olympic season, which culminates in Milan later this month.