  We explore the connection between starspots and plages of three main-sequence
stars by studying the chromospheric and photospheric activity over several
rotation periods. We present simultaneous photometry and high-resolution
($R\sim 31,500$) spectroscopy of KIC 9652680, a young, superflare-producing G1
star with a rotation period of 1.4 days. Its Kepler light curve shows
rotational modulation consistent with a bright hemisphere followed by a
relatively dark hemisphere, generating photometric variability with a
semi-amplitude of 4%. We find that KIC 9652680 is darkest when its $S$-index of
Ca II H & K emission is at its maximum. We interpret this anti-correlation
between flux and $S$ to indicate that dark starspots in the photosphere are
co-located with the bright plages in the chromosphere, as they are on the Sun.
Moving to lower masses and slower rotators, we present K2 observations with
simultaneous spectroscopy of EPIC 211928486 (K5V) and EPIC 211966629 (K4V), two
active stars in the 650 Myr-old open cluster Praesepe. The K2 photometry
reveals that both stars have rotation periods of 11.7 days; while their flux
varies by 1 and 2% respectively, their Ca II H & K $S$-indices seem to hold
relatively constant as a function of rotational phase. This suggests that
extended chromospheric networks of plages are not concentrated into regions of
emission centered on the starspots that drive rotational modulation, unlike KIC
9652680. We also note that the Ca II emission of EPIC 211928486 dipped and
recovered suddenly over the duration of one rotation, suggesting that the
evolution timescale of plages may be of order the rotation period.
