A high school senior, Alex Lainey, has an encounter with mysterious lights that appear over her small town. She soon develops dangerous, supernatural abilities and turns to her childhood friend Sean Terrel. The authorities target them and a chase ensues as officials try to discover the truth behind Alex's transformation.

Set in contemporary Montreal, “This Life” is a family saga focusing on Natalie Lawson, an accomplished columnist and single mother in her early forties whose terminal cancer diagnosis sends her on a quest to prepare her teenage children for life without her. Her tight-knit family – sister, two brothers and parents – do the best they can to help her, while coping with their own responses to this revelation.