Not having read Volume 18, I've discovered that Mark is back to normal while Eve isn't allowed to use her powers – and they're engaged! I've learnt that Nolan has gained power over the Viltrumites.
There's plenty of character development – and action! Angstrom Levy returns as well. We also have storylines featuring Battlebeast, Doctor Seismic and Robot.
Wow however – this is an engaging and exciting volume, full of plot and action. Well recommended.