When Lee Mi Ra won a prize from a suspicious looking man who claimed he was promoting new products from an unnamed company, she thought that her life would somehow be easier. Robot prototypes that can do actual housechores AND act as bodyguards? Game on! But it turns out that Mi Ra's imagined robots and the real thing turn out to be on two different spheres, because what was delivered on her doorstep was way far from what she expected. Would her prize turn out to be a blessing or not?

Characters:

Prototype 2.0 Jinyoung Fox

Quick-witted and cunning as a fox, Jinyoung is one of the more dependable prototypes. He is skilled in cooking, and he helps Mi Ra control the others (especially the Duck and the Squirrel)

Prototype 2.0 Shinwoo Bear

Calm and steady (except when he malfunctions) Shinwoo is dependable and motherly, taking care of the Mi Ra, the other prototypes and the rest of the house.     He takes charge of cleaning, and although he sometimes nags, Mi Ra know that he is doing it for their own sake.

Prototype 2.0 Baro Squirrel

The frivolous and sometimes annoying prototype, Baro is in charge of the laundry. He is always finding stuff to do around the house, and never hesitates to step in when Mi Ra needs help.

Prototype 2.0 Sandeul Duck

He works best with the Squirrel, they're practically a match made in heaven (or from down below). An expert in making cakes and pastries, he works in the kitchen with Jinyoung. 

Prototype 2.0 Gongchan Puppy

Cheerfrul, inquisitive and childish sometimes, Gongchan is the very personification of a puppy robot, always stuffing his nose into stuff. He is always the first one to discover things about Mi Ra, espescially those that she'd rather hide. 

Lee Mi Ra

Used to doing things on her own, the sudden arrival of the human-looking prototypes shake her world. Suddenly she has five guys waiting for her hand and foot, pleading to do even the tiniest and simplest things. Smart, but stubborn and strong-willed at the same time, she suddenly finds herself plunging headfirst into a life she had never imagined.

The prototypes are knowledgeable about a lot of things, but completely clueless in others.  Now they all have to live under one roof, learning lesons from each other and making fond memories.