Alona Macaraig is known for being a prim and proper. Many calls her nerd and once bullied her in her gradeschool days. But she never let them see her being hurt. She thought that would gonna be a cycle of her life 'til she turned into her legal age and randomly, there's a handsome hunk professor entered their university. She found him mysterious yet she can't help but crushing on him. Despite that, she only knew his name and it's Tres Leviste. They became closer and closer but when she discovered that her professor crush is not the man she knew, that he's not a mentor but beyond all of that. With that, everything fell in chaos. Will she still accept her disguising beloved? Is she willing to face all the consequences for being with the Billionaire in Disguise?