Fourth issue in an eight issue series! Each 24 page comic is published in print and digital at the same time! The biggest science-fiction crossover of all time continues, in STAR TREK: THE NEXT GENERATION/DOCTOR WHO: ASSIMILATION! As the CyberBorg continue to carve a swath of destruction across the galaxy, the Federation is met with the possibility of assistance, but from an unthinkable source! Will Captain Picard and the Doctor agree to an alliance that could be worse than the enemy they face?