This sentence will make sense in context. As you may know, you do not always need to say the pronouns in a sentence. For instance "Leap the fence." The sentence is a demand. Who is it to? The demand is to the listener; an understood 'you.' That is what your sentence has done. It is an understood - silent you, you two, or we. We would know the answer of the pronoun in context, as we would the meaning.