Long-time couple Freddy and Zeno have only known intimacy with each other. Curious about experiences with others, Freddy proposes an experiment. Despite his reservations, Zeno finds himself unable to refuse her request.
Zeno debates with a co-worker, who questions his bond with Freddy. The discussion unexpectedly becomes flirtatious. Witnessing this, Freddy experiences jealousy for the first time, a new and unsettling emotion for her.
Freddy believes a major change is necessary; Zeno and Anne engage in a serious talk about their connection, despite not being in a relationship because Zeno is still committed to Freddy.
Post-experiment, Freddy and Zeno attend a party, intending to resume their couple status. However, the event unfolds unexpectedly, leading them to question what remains of their relationship after the 30-day separation.