Woo-dol's runaway leaves Woo-yeon's house in chaos. Ki-jeong rescues Woo-dol and Bong-gu from near-critical injury, and Woo-yeon's family and Ki-jeong meet at the hospital. Meanwhile, Green heads to see his first love, Heo Je-ro, to resolve their marriage... What will be the outcome of Woo-yeon and Ki-jeong's love? Will Seon-ho and Green have a happy ending? This is the final story of young people, each with their own struggles to find their own unique identity, each with their own worries!