In the dim light of their shared bedroom, a brother and sister, bound by blood and religious upbringing, find solace in each other's company. As they grow older, their bodies change, and so do their feelings. One night, as they share a bed due to a storm, their legs entwine, and they feel a spark that sets their hearts racing. The next morning, they wake up to find their bodies pressed together, their undergarments damp with desire. They know they've crossed a line, but the temptation is too great, and they soon find themselves lost in a web of guilt and pleasure.