Kim Sunggyu woke up from a five-year coma with no single memory from the past. With his mother's help, he start to live a new life. Replacing forgotten memories with new ones. But his 'life' began to change when a girl named Lee Sarang suddenly appears claiming she's his wife and ask for a week to help him remember. Twenty four. Forty eight. Seventy two. But One Hundred Sixty Eight hours isn't enough when he's living a life with too many lies.