This is not the kind of drama that will upset you, so it's okay to watch it before you go to sleep at night.
You won't feel worked up watching this drama, so I think it's okay to watch it at night before you go to bed.
この場合、次のような言い方ができますよ。
ーThis is not the kind of drama that will upset you, so it's okay to watch it before you go to sleep at night.
「これは気分をかき乱されるようなドラマじゃないから、夜寝る前に見ても大丈夫だよ」
drama that will upset you で「気分を掻き乱すドラマ」
ーYou won't feel worked up watching this drama, so I think it's okay to watch it at night before you go to bed.
「このドラマを見て気分はかき乱されないから、夜寝る前に見ても大丈夫だと思うよ」
to feel worked up watching this drama で「このドラマを見て気分がかき乱される」
ご参考まで！
カナダ 
