Taarak Mehta Ka Ooltah Chashmah S01 E103 Champaklal Gets Arrested

"Problems Toh Hain Sabke Saath, Bas Nazariye Ki Hain Baat!"

Jethalal tries to get back the money from his father which he refuses. Meanwhile, Champaklal gets arrested. Why does he get arrested? Has he committed a fraud?