Review by Michael Goleniewski
Under the seas of an alien world, the Third Doctor and Sarah Jane Smith have landed in a gigantic sea-base city run entirely by scientists working to clean up the planet. From cleaning up pollution to creating clean energy, these beings are working for the good of the entire population and of course, the TARDIS team is more than happy to help. While the Doctor is busy in his duties and work, Sarah Jane Smith puts herself on the case of some potentially dangerous issues such as flickering lights that hint at something going precariously wrong and staff members going missing in the deeper parts of the facility. An ominous recording captured on the security cameras portends the arrival of a force stalking and waiting in the depths of the base to make its attack, one which the Doctor is intimately familiar with and rightfully horrified of. The Cybermen have arrived and are working to gain a foothold in this world and its resources by any means necessary and this time they may have outsmarted even the Doctor in their attempts to conquer…..