Crossing Over: The Time Guardian Series

After losing Karina and their child, a mission was given to Albert and his team to save Christianity and the world as they know it. Through the twists and turns of time and the apparent murder of one of his team members, Albert and his team try to stop a terrorist group from destroying Christianity, the time continuum, and solve the murder of his friend and team member. Yet Albert had to overcome his physical weakness while being laser-focused on seeing his love again.