'Lucas, etc.' tells the adventures of a 12-year-old boy who meets his new stepfamily. From a situation as an only child, he finds himself surrounded by two new half-sisters and a new half-brother. From surprising meetings in impossible family situations and uncontrollable mad laughter during anxiety crises, Lucas will experience everything intensely and adapt to his new family life. Not a lot is going Lucas' way: he's a dreamer and an impertinent only son, and the Goossens family's children wrote the rules a long time ago. Through Lucas's eyes, viewers will sample the reality of many children in a stepfamily: a complicated school life, the most beautiful friendships, first loves, the biggest mistakes, and unforgettable emotional discoveries.