  RZ Piscium (RZ Psc) is well-known in the variable star field because of its
numerous, irregular optical dips in the past five decades, but the nature of
the system is heavily debated in the literature. We present multiyear infrared
monitoring data from Spitzer and WISE to track the activities of the inner
debris production, revealing stochastic infrared variability as short as weekly
timescales that is consistent with destroying a 90-km-size asteroid every year.
ALMA 1.3 mm data combined with spectral energy distribution modeling show that
the disk is compact ($\sim$0.1--13 au radially) and lacks cold gas. The disk is
found to be highly inclined and has a significant vertical scale height. These
observations confirm that RZ Psc hosts a close to edge-on, highly perturbed
debris disk possibly due to migration of recently formed giant planets which
might be triggered by the low-mass companion RZ Psc B if the planets formed
well beyond the snowlines.
