My Dad, The Secret Billionaire

Billionaire Robert Lawson, disguised, attends son Liam Lawson's wedding. Liam, burdened by family, married into the Sullivan family. On the wedding day, mother-in-law Mrs. Lewis humiliates Liam, demanding a 'groom's entry fee' and forcing him to kneel. Robert helps, but bride Serena Sullivan falsely accuses him of indecent assault, turning father and son into a laughingstock. Robert learns Liam endured humiliation not for wealth, but for his sick father and grandmother's security.