Supergirl - Season 3, Episode 21: Soundtracks

The D.E.O. and Cat Co. each threw Kara a farewell party. Kara gives her farewell speech before departing to her home planet.

J'onn invites Alex to go see an opera with him & M'yrnn. M'yrnn tells J'onn he must perform The Reach before he loses his memories for good, but J'onn refuses to believe it.

Kara walks through a plant atrium when Mon-El finds her, she voices how she feels about being home and the danger she suspects; Mon-El confesses his feeling to Kara, she tells him about her dream.

Eve thanks Lena for allowing her to work on her project; Lena discovers theres more to the Harun-El than it seems; J'onn tells his father he's ready for The Reach; Alex looks up adoption.

J'onn invites Alex to go see an opera with him & M'yrnn. M'yrnn tells J'onn he must perform The Reach before he loses his memories for good, but J'onn refuses to believe it.

Alex and J'onn reminisce about Kara's taste in music then J'onn asks for her to come to the opera with him and his father; M'yrnn informs J'onn its time for perform The Reach soon which he disagrees with; Alex gets a call to come into work, J'onn leaves with her.