Roadside Attractions has acquired U.S. rights to Xavier Dolan’s Cannes pic Mommy. The plan is to release it in first-quarter 2015. Dolan’s fifth film centers on an explosive 15-year-old boy with ADHD and his widowed single mom. But when Kyla, a new girl across the street, enters their lives, things change. Anne Dorval, Antoine Olivier Pilon and Suzanne Clément star.

Dolan, a Canadian, moved up to the Cannes Competition lineup for the first time with Mommy after winning three prizes in Directors’ Fortnight at just 19 (he was famously miffed to be in Un Certain Regard rather than Competition in 2012 with his Laurence Anyways). Mommy won the Grand Jury prize this year.

EOne and Montreal-based Les Films Séville are handling distribution of the film in English and French Canada, while Séville International VP International Sales Anick Poirier negotiated the U.S. deal with Roadside co-president Howard Cohen and attorney Greg Bernstein.