The preview sees Anastasia Steele (Johnson) and Christian Grey (Dornan) reignite their romance before dark forces from Christian's past threaten to tear them apart.
Johnson and Dornan finished filming Fifty Shades Darker and the next sequel, Fifty Shades Freed, back-to-back in July. E! News reported in November that Fifty Shades Darker will be rated R for "strong erotic sexual content, some graphic nudity and language."
"It's pretty tedious," Johnson said in the May issue of Interview of filming sex scenes for the sequel. "We're not having actual sex. But I've been simulating sex for seven hours straight now, and I'm over it."
The film is a sequel to last year's Fifty Shades of Grey, and will be followed by Fifty Shades Freed in two years. The series is based on the E.L. James erotic book trilogy, and follows the relationship between Ana, an inexperienced college student, and Christian, a BDSM-loving businessman.
Fifty Shades Darker opens on Feb. 10 and Fifty Shades Freed on Feb. 9, 2018. The first film opened in February 2015 and earned $571 million at the box office.