A young girl and her mother move to an apartment in a new city. Despite her mum’s efforts to take her out, the girl would rather play by herself in their cosy home – she feels just fine on her own. Meeting any children her age has her hiding behind her mother’s legs, and invitations to group activities has her in tears. That is, until she meets Millie, a rescue dog who is not too big, not too small, and kisses her arm when the girl nervously reaches out. With Millie, saying hello to new people isn’t so scary, and maybe making a friend isn’t either.