A young man goes to his father's home in Maine where, helped by a public registry, he locates and tracks down sex offenders. In parallel, his mother follows his trail in order to try to understand what could have pushed him into this murderous madness.

Hakeem and A-Mac are like brothers. Together facing immigrant life in Montreal, while 'spotting' cars after school. Boost gives us a glimpse into the awkward adventures of teenage boyhood, then the jolt, when that innocence ends abruptly.