Simplify the following text for a Grade 8 native English-speaking person.
Original: In the autumn of 1928 , with October still under fire in many Soviet quarters , Eisenstein left the Soviet Union for a tour of Europe , accompanied by his perennial film collaborator Grigori Aleksandrov and cinematographer Eduard Tisse .
Simplified: In the autumn of 1928 , Eisenstein left the Soviet Union for a tour of Europe . He was joined by Grigori Aleksandrov and cinematographer Eduard Tisse .