Simplify the following text for a Grade 6 native English-speaking person.
Original: About his character , an undead rock musician avenging his murder and that of his fiancÃ e , Lee said , `` He has something he has to do and he is forced to put aside his own pain long enough to go do it '' . It would be Lee 's last film .
Simplified: About his character Lee said , `` He has something he has to do and he is forced to put aside his own pain long enough to go do it '' .