The secret of the ring is finally revealed! Se-geon (Ahn Hyo-seop) is torn between Nan-hee (Kim Seul-gi) and Mi-joo (Yoon So-hee). Meanwhile, Tae-hyun (Lee Tae-sun), who finds the ring that fell into the water, tries it on his hand. Conflicting rings, mismatched destinies. Does Se-geon love Nan-hee or Mi-joo?