  Resistive and magnetization properties have been measured in BiS$_2$-based
samples CeO$_{1-x}$F$_{x}$BiS$_{2}$ with a systematic substitution of O with F
(0 $<$ x $<$ 0.6). In contrast to the band structure calculations, it is found
that the parent phase of CeOBiS$_2$ is a bad metal, instead of an band
insulator. By doping electrons into the system, it is surprising to find that
superconductivity appears together with an insulating normal state. This
evolution is clearly different from the cuprate and the iron pnictide systems,
and is interpreted as approaching the von Hove singularity. Furthermore,
ferromagnetism which may arise from the Ce moments, has been observed in the
low temperature region in all samples, suggesting the co-existence of
superconductivity and ferromagnetism in the superconducting samples.
