Looking for a translation plug in

I am trying to get a plug-in to translate my theme template with the following domain: www.t-chers4pv.com.mx however, my question is this… is it pòssible to link the plug it to the template? Its urgent. Someone please help me out.

I think my template does not support a plug in translation, it is not a translation-ready theme. how can i get it translate it? What type of plug in can i get? It’s urgent.