Release Message:  With the merciless Melkur in control of The Source, the Doctor (Tom Baker) and his allies have only a slim chance of deposing him, which also puts the peace of the Traken Union in severe jeopardy.

Description:  With the merciless Melkur in control of The Source, the Doctor and his allies have only a slim chance of deposing him, which also puts the peace of the Traken Union in severe jeopardy.