Complex sentence: They realize he got into an accident and is suffering from strong amnesia and decide to stay with Sanju and his wife Neetu (Vidya Balan) until Sanju remembers where he hid the money.
Split into simpler sentences: They realize he got into an accident and is suffering from amnesia. The duo decide to stay with Sanju and his wife Neetu (Vidya Balan) until Sanju remembers where he hid the money.