what's the scam

slang

(slang) What's going on? What are you trying to pull? (said when one is suspicious of someone else)

Japanese Meaning

何か企んでいるのか？ / どういうつもりだ？ / 相手の行動に対して疑念を抱き、怪しんでいる状態を示す

When he offered to 'fix' my credit for a fee, I looked at him and said, 'what's the scam?'

彼が報酬を取って私のクレジットを『直す』と持ちかけたとき、私は彼を見て「どういうつもりだ？何を企んでいるんだ？」と問いただした。

Sense（1）

(slang) What's going on? What are you trying to pull? (said when one is suspicious of someone else)