Jeong eun gyo now owns a cafe with her friend Kim Hea Da, but 3 years ago her breakup with her then boyfriend left her desolute. Eun gyo needs to clean out the basement apartment since a tenant will be moving in soon, but it has all her exes things in it still. Eun gyo meets the new tenant, a young student who was a voice actor for her friends movie that she wrote the script on. It turns out he is the younger stepbrother of her ex. Though she's doesn't know this yet. He has liked her for years after seeing her very outside his dad's house when he was a kid.
The Circumstances of an idiot