Neon, a 24-hour laundromat worker, gets herself into a sticky situation when she develops a crush on Night, a customer with adorable dimples.

Night and Neon begin their mission to search for the missing briefcase with the first suspect, Judo, a university student.

The search for the briefcase continues as a new lead brings them to Momay, a karaoke girl who dreams of making her debut as an artist in South Korea.

Night and Neon follow a couple to a favourite haunt for rockers. Amid growls and out-of-control mayhem, they figure out who has the briefcase.

Night and Neon develop their romantic relationship despite the chaos while investigating Chompoo, an apartment caretaker who is in love with Night.

To complete the Endgame operation, Night and Neon assemble a team of suspects whose skills lead them to the true villain.