Top-ratedS1.E1 ∙ Back to the AstroFri, Aug 7, 2015A wish, a storm, a surprise birthday party, and three members of a boy band find themselves flung back in time to relive two years of their own past.8.2/10 (12)Rate
S1.E2 ∙ DejavuNot all the boys are keen to precisely repeat the past in order to re-obtain their remembered future.
S1.E3 ∙ Wandering AstroIn trying to see that Moon Bin and Eun-woo repair their severed association, MJ and Jin Jin come to a horrible observance about Eun-woo.
S1.E4 ∙ The Secret That I Want to HearAs Eun-woo tries to recruit Rocky and San-ha, MJ and Jin Jin fear Eun-woo's altered condition could become theirs as well.
S1.E5 ∙ Twisted PastYeo-reum's reaction to an overheard conversation widens the divide between the boys.
S1.E6 ∙ Please Help Me!MJ and Jin Jin spearhead negotiations to secure Rocky into the group, but sudden loss of future memories again rears its ugly head.
S1.E7 ∙ SlumpMJ finds himself alone in trying to rectify the past. Eun-woo receives an offer he finds hard to dismiss.
S1.E8 ∙ The Flower That Blooms in StruggleThe boy band rallies when the street punks can't leave Moon Bin alone.
S1.E9 ∙ Take Care of My PastWith the group reconciled and finally getting down to business, MJ discovers he's not alone after all, nor is he the primary time traveler.
S1.E10 ∙ A Piece of MemoryAs Eun-woo's boy band prepares to rehearse, they come up on charges of plagiarism thanks to his rival, Seon-hyuk, filing the song first.
S1.E11 ∙ Episode #1.11In order to get Eun-woo's boy band to perform a song Eun-woo hadn't yet written, MJ and Ah-rin break their silence about time travel.
S1.E12 ∙ Back to the FutureEun-woo's boy band competes against Seon-hyuk's girl band for the spot to represent their school at the festival.