Song Hae Tee and Lee Hongbin have been friends for as long as they can both remember. They'd grown up together, gone to school, hung out, almost inseperable. Until Hongbin decided, 2 years ago, to become a famous Boy Group Idol. To Hee Tae, their promise of "friends forever" had been broken once he'd stopped talking to her. Now 2 years into the future, Hee Tae is a new debuting member of Jellyfish Entertainment's new girl group, Galixistaar (Pronounced: Galaxy Star). Will old friendships be strong enough to repair? Or will a broken heart pull the two toward hatred?