Starring Amy Schumer, Bill Hader. Rated 14A. Now playing.

Comedy’s new “It” girl is Amy Schumer, and if you haven’t caught her trenchant sketch show Inside Amy Schumer yet, now’s your chance to see her hit the big time in this rom-com that she wrote and stars in.

Trainwreck just plain works, in a way that makes you wonder if the romantic comedy might be mounting a comeback. It also goes on too long—like all of director Judd Apatow’s movies—and features an absurd amount of crying in the last reel, but those are niggling complaints. Schumer’s written a fine vehicle for her bawdy talents, and she’s found a great, quirky costar in former Saturday Night Live cast member Bill Hader. The two make a ridiculously appealing couple.

Schumer plays Amy, a writer for a men’s magazine whose boss (Tilda Swinton, sporting a fun fake tan) assigns her to interview a doctor, Aaron (Hader), who treats NBA stars, including his best friend LeBron James (playing a Downton Abbey-loving version of himself). Since Amy drinks a lot and sleeps around, she ends up slyly inviting herself over after her interview with Aaron turns into a night out. That cab ride where her intentions dawn on Aaron may be the funniest scene in the film.

Their romance doesn’t have any obstacles beyond Amy’s commitment-phobia, so the drama comes from her family: Colin Quinn as her ailing, rascally dad and Brie Larson as her more settled sister. Neither comes across as a stereotype. If anything, Aaron and LeBron seem like a new stereotype of guys in touch with their feelings, which lets the girls be the immature ones for a change.

If the plot takes familiar turns, there are enough twists on characters and scenes to keep things feeling fresh throughout. And there’s enough goodwill towards Amy and Aaron that their happy ending feels damn well-earned.