As a rainstorm approaches, the rats begin moving the Brisby home, with the children inside, using a rope and pulley system. Jenner, who wishes for the rats to remain in the rose bush, sabotages the assembly with his reluctant accomplice, Sullivan, causing it to fall apart and crush Nicodemus to death. Mrs. Brisby arrives and tries to warn the rats about NIMH's arrival, but Jenner attacks her and attempts to steal the amulet. Sullivan alerts Justin, who comes to Mrs. Brisby's aid. Jenner mortally wounds Sullivan and engages Justin in a sword fight, which ends with the dying Sullivan killing Jenner and saving Justin's life.