Watch the First Trailer For Lifetime's 'Britney Ever After' Biopic

The peek features a look at Spears' infamous head-shaving incident.

Britney Ever After doesn't look like it pulls many punches. From the looks of the first trailer for the upcoming two-hour Lifetime biopic about "Toxic" singer Britney Spears, the film will take the good with the bad in retelling the story of the former teen star's rocky ride to global domination. Starring Natasha Bennett as Spears, the 30-second clip opens with footage of current-day Spears performing and exiting a limo in a silvery jumpsuit before cutting back to a scene in which Bennett shaves her head in one of the most infamous incidents from the singer's difficult middle period.

"I'm not gonna say I was fine," Bennett says in a scratchy drawl that approximates Spears' speaking voice as the shears go across her head and we see another iconic image from that time: a bald Spears striking a car with an umbrella. "Because I wasn't." A quick montage then spins through Spears' quickie marriage to dancer Kevin Federline and a worried-looking Britney chewing her nails while fretting over hitting "rock bottom." 

The unauthorized movie -- which did not have cooperation from Spears and her team -- also stars Clayton Chitty as Federline, Peter Benson as Spears' manager Larry Rudolph, Nathan Keyes as one-time boyfriend Justin Timberlake, Nicole Oliver as mother Lynne Spears and Markian Tarasiuk as choreographer Wade Robson.

Check out the preview of the film, which airs on Lifetime on Feb. 18 at 8 p.m. ET: