Grounded，My Husband’s Flight to Ruin

From the back cover

At Horizon Airlines, dispatcher Brooke keeps to herself, and her colleagues mistake her reserve for coldness. Summer, a bubbly new flight attendant, charms the whole company on arrival. Brooke's secret husband, Austin, a chief captain, insists he finds Summer utterly annoying—until Summer's birthday invitation sparks a flood of furious messages, a boast that her husband is the airline's biggest shareholder, and a wedding photo revealing that husband to be Austin himself.

Brooke answers in the group chat with a promise to attend and a surprise in hand. At home she sets about freezing Austin's assets and cutting off his credit cards, then arrives at the party in an evening gown, where Summer and the sycophantic colleagues mock her, tear at her dress and demand she kneel and apologise. Brooke instead presents a crate holding a filthy second-hand scooter and a pile of complaint letters detailing Austin and Summer's misconduct.

When Summer summons Austin by phone, Brooke produces two marriage certificates and names herself his legal wife, leaving Summer exposed as the side piece.